Do you have any personality disorders? Peer support?
I have histrionical, narcissistic, avoidant and paranoid personality disorder. Sometimes i feel like a cursed child
Narcissistic personality disorder — one of several types of personality disorders — is a mental condition in which people have an inflated sense of their own importance, a deep need for excessive attention and admiration, troubled relationships, and a lack of empathy for others.
Some people can be like you are saying so then it is seen as their personality trait and they can control their behaviour. Mental health issues as disorders are something people don't choose but cannot help to be this way, if they have them, so only proper therapy can change their ways.
Some of the symptoms or whole disorders can come up and settle when you reach the age of young adult so your take has a big margin of possibility of being false :P
Stay strong <3 at least on the positive note you are aware of them and it is big thing because then you can actively try to find the ways to help yourself.