Since people have already given the same advice I would for the bully, I might weigh in on your friends. They fact they didn't seem to be willing to stick up for you against your bully, I might look at how good of friends they are and whether they're actually good friends. Losing friends is hard, especially all at once but sometimes it might be necessary for yourself. Don't jump into losing all your friends but certainly look into how good of friends they are to you besides hanging out. Good luck