Hey I know what you mean I used to cut my arm all of the time because I felt like no one liked me or wanted me but then I started to make friends after talking to people and not eating alone taking risks and it made a hell of a lot of a difference. I know it's not easy but you need to try your hardest to blend in and try to make friends that YOU think you could be good with and try to talk to as many people as you can then you can see who u think u could have a good relationship with.