I was never on the "most popular" list either in high school. I think some of these young folks have watched the movie "Mean Girls" or some version about mean boys too many times.

You might want to talk to a teacher and especially to the school counselor and get some support. Or at least see what these folks have to say. I don't want you to have to deal with so much pain on your own.

But, as Mazing said, you are finishing your last year and won't have to be with these folks forever. I really blossomed in college. (Objectively, I wouldn't win any beauty pageants, and I never even had a boyfriend in high school. But I've been married now for over 24 years!)