I echo what others have mentioned, identify a group or activity that you like and just start hanging out with that crowd. Ask someone to help you with your homework, even if you don't need the help.

I'm an middle age type and didn't have a middle school where I grew up, K-8 then HS. I knew all those kids and always had friends, though not necessarily all the kids were friends but none were enemies.

Be yourself and like yourself, be friendly to everyone. Never give up and if things look too bad, talk to a counselor at school. Grownups can help if you let them.