I'm 14 And I Study In 10th Grade. I Feel

I'm 14 and I study in 10th grade. I feel really alone.... and to mention that I'm not depressed.... I have questions.. Can't I just live the way I want to??? my life is starting to become miserable... I sometimes start to feel guilty of questions like..."am I the only one who is like this or every one out of two teenagers face the problems I face....??"