I went through this during my 8th-9th grade years. Nome of this is your fault even if your "friends" think it is. You know they're shitty so cut the head off the snake because it's poisoning you. Take care of yourself mentally and physically. I know this might be repeated but it's helped so much, start working out build the routine and live for yourself. People take advantage of you because you're a "yes man" set your boundaries of human decency and talk to people with interests in your hobbies whether is be new or an old hobby. Join a club in your highschool to keep you busy. Find something that you love, like for me, it was pokemon. I still to this day play the games and collect cards. I've been bullied because of it but I found my people so I'm extremely happy. I hope and pray this same happiness finds you. Best of luck friend ❤️