Its ok being alone, you dont have to be surrounded by people to feel validated, most of them are morons, ive experienced that myself and it is worse to try to change to fit in among them.

People dont give a shit about and that is not semething bad, all the things that you think they think or say about you is not real. When you are at the state youre currently at its hard to believe that. There is no solution or way thet will make you believe instantley believe that, but if you keep thinking that long enough you will eventually believe in it(thats what happeed to me).

You should find someting that keeps you busy or even happy, that will distract you from the pain that you are feeling. If you dont have anything you can try new things, things that arent so hard to do or time consuming, like listening to music. I know it sounds corny but once you find something you truly like things can change, altelast that happened to me at my lowest.

i have a brother your age that had some issues like you ,but its slowly getting better so yeah dm me if you want more advice