I don't have any real friends?

Well, I have a lot of.military friends, mostly Marines. My older brother is a Marine and he takes me with him to play sports with his friends. I am a girl and I have friends but not real ones. They're always gone all the time, they're too buisy doing their jobs as Marines. I'm not friends with any girls at school, they all have the mean girl attitude and the boys don't even talk to me at all. And it's all because i'm 11 and in the eighth grade. I skateboard, play the electric guitar, hate shopping, and hate my life. I usually just wear skinny jeans, a graphic t-shirt, a purple jacket, and a pair of white sneakers or converse. All the.girls in school like practically resent me, which is why I ditch school about once or twice a month. And I AM NOT LESBIAN! I'm tomboy but straight, learn the difference. Do you think that I should just quit being me and totally change, because then I would have more real friends?