Selfishness is part of the impermanent modifications of the mind. It's part of the survival instinct in all living beings. It's naive to be judging anyone as a selfish or unselfish person, not to say, a good or bad being, even though certain actions/reactions are being perceived as selfishness or unselfishness.
The minds that are free from ignorance and egoism, they don't judge or label anyone as good or bad being, selfish or unselfish person, even though they are aware of the existence of certain kind or unkind, selfish or unselfish actions and reactions in all and everyone, being aware of all kind of modifications of the minds or agreeable/disagreeable behaviors are impermanent and conditional.
The minds that are functioning under the influence of ignorance and egoism, and have no awareness towards the modifications of the mind, are restlessly swaying between good mood and bad mood, being conditioned by the likes and dislikes, agreements and disagreements, desires and don't desires of themselves, that are determining their behavior and interactions with the others, where they can be unselfishly easy going, kind and nice at one time, while can be selfishly difficult, unkind and hurtful at some other time depending on the states of their mind.
Those who are behaving selfishly most of the time can sometimes be unselfish under certain reasons or conditions. While those who are behaving unselfishly most of the time can also sometimes be selfish under certain reasons or conditions. Or, people can be selfish in certain things while being unselfish in some other things at the same time. Most of the time, the minds are being less selfish, good or nice to others when the minds are in good mood, upon perceiving something desirable and agreeable to them, while they are being selfish, bad or not so nice to others when the minds are in bad mood, upon perceiving something undesirable or disagreeable to them.
It's neither right nor wrong, neither good nor bad, neither positive nor negative, it's merely the behavior pattern of the minds functioning under the influence of ignorance and egoism, although selfish intention and behavior can cause certain unpleasant consequences to oneself and others, and impacting the condition and situation of the surrounding environment, either intentionally or unintentionally.
Similarly, sometimes what the minds recognized as unselfish intention and behavior might also can cause certain unpleasant consequences to oneself and others, and impacting the condition and situation of the surrounding environment in certain way, unintentionally.
Some minds are aware of selfishness, but they still want to be selfish, either wittingly or unwittingly, due to certain desire, motivation, ambition, aspiration, desperation or fear, regardless of whether they think and believe that selfishness is something bad, wrong and negative, or not.
Some minds are not aware of selfishness in themselves, and they are behaving selfishly most of the time, but they might be thinking and believing and identifying oneself as an unselfish person, while recognizing certain selfishness in some others.
Many minds might think and believe that selfishness is something bad, wrong and negative, that they don't want to be selfish, and they want to be unselfish. They want to be recognized and acknowledged and identified as unselfish people, and they don't want to be recognized, or acknowledged, or identified as selfish people. They might be performing many actions that they think are unselfish actions, and they might not perform any actions that they think are selfish actions. They think and believe that they are unselfish people, as they have been being generous, thoughtful, nice and kind to others, or they have been sacrificing their time, energy, effort and priority for some others for certain reasons, where there's expectation towards receiving acknowledgement and appreciation from others for being generous, thoughtful, nice and kind, while they would be disappointed if their generosity, thoughtfulness, nice treatment and kindness are not being acknowledged or appreciated as they expect how it should be. Such attachment and identification towards the state of selfishness and unselfishness is also part of the modifications of the mind under the influence of ignorance and egoism.
Disappointment towards other people's behavior that the mind thinks and believes as something selfish, wrongful, bad or unkind, while being determined and disturbed by that, is the responsibility of the mind itself for having expectation towards all and everyone should and shouldn't behave in certain way. The minds that understand, they won't be disappointed or determined by the selfishness, wrongfulness, badness and unkindness in the world, as they don't have expectation towards everyone should and shouldn't behave in certain way. They might not agree with certain behavior in certain people, but they understand that it's everyone's freedom for their own behavior, and it's everyone's responsibility towards their own behavior and the consequences of their behavior, may it be it's one's family members or close friends, or someone happens to be famous, powerful, knowledgeable, talented, successful, or highly respected in the world.
Selfishness that derived from survival instinct and other impurities such as desire, ambition, self-glorification, self-protection, jealousy and resentment exists everywhere, including within the same family, friendship, relationship, workplace, classroom, community, competition, not to say, in the field of politics. Out of desire, ambition, self-glorification, self-protection, resentment or jealousy among siblings, friends, partners, classmates, colleagues, communities, competitors, or politics, may it be to glorify oneself in order to gain attention, liking and support from certain people, or to protect oneself and one's desires, benefits and status, or merely to injure or weaken the others in order to achieve success or something that one desires, where siblings, or friends, or partners would hurt one another, either secretly or openly, not to say among classmates, colleagues, communities, competitors, and especially, politics. At one time, people are being nice to one another, while at another time, the same people are hurting one another, when things are not the way that they desire and agree with, or not the way that they expect it to be.
The minds that realized selflessness, are free from egoistic attachment and identification towards the impermanent modifications of the mind. There's neither "I am selfish" nor "I am unselfish." There's neither "I want to be selfish/unselfish" nor "I don't want to be selfish/unselfish."
All are selfish, under the presence of the idea of 'I' and the duality/separateness/survival instinct/attachment/identification/desire/fear that exists along with the idea of 'I', and would hurt anyone in order to achieve one's desire or ambition, or to protect oneself and one's benefits, unless the mind realized selflessness, void of ignorance and egoism, or selfish intention and desire, even though certain actions (both action and inaction) might be perceived by the ignorant egoistic minds as 'selfishness' or 'unselfishness'.
How everyone want to think, act and react, agree and disagree towards all and everything, is everyone's freedom. One can be aware of what is going on in one's mind, and have self-control over one's actions and reactions, or not, without attachment or identification, and let other minds to be aware of what is going on in their mind, and have self-control over their actions and reactions, or not.
Respecting everyone being what they are and how they are, and all are impermanent, without interfering or regulating everyone and everything to be and not to be in certain way. Let everyone be responsible for looking after their own mind and have self-control, or not, and be responsible for the consequences of their own behavior, actions and reactions, even if there's collective responsibility that is also not in the control of anyone.
Let go the thinking and belief about "This, or 'I', deserves or doesn't deserve this and that," based on particular thinking, belief, values and practice.
Realize this and be free.