Idk anymore

I'm a freshman in high school but I don't know if I want to be part of this world anymore because I have to deal with getting taken advantage of just cause I'm an easy-going person. And I feels like most of my friends don't even care for me or don't show sympathy for me, like I have a friend named Leonard and I feel like he's not as willing to see me as he was before in 6th and 7th grade. And I have this friend named Eythn who keeps calling me a fatass for no reason and I keep telling him to stop but he just won't because he's fucking difficult. And I also lost one of my friends last summer and she didn't even state why she didn't want to be friends anymore and I wanted to ask her why but I didn't want to start another argument. And I also have to deal with being fat shamed or with people being racist to me just cause I'm Muslim. And every time I hear this, I consider hurting myself on purpose so people can show concern/sympathy for me. I just want this to fucking stop.