Is it normal i don't wanna see my friends anymore

Since I graduated in high school about a month ago, I have seen only one time my school friends. In the past few months I've been really stressed out about vestibular (a test we have to do if we want to get into college in Brazil), and in somehow my friends and the way they didn't really care about it (like they don't care about their future) made me get stressed even more. They've been my friends by years, but we never got to go out frequently or anything. We pretty just talked to each other at school and by Internet. I just feel like they're not the real friends I really wanna have, I want to meet new people at college. Perhaps we have never been real close, I feel bad about not wanting to continue the friendship and spending my summer vacation alone (but my family) as I ALWAYS did. I just feel like they have nothing to offer to me or my happiness. Am I wrong or should I do what I feel like doing not what I guess I have to do? I just hope to find the friends I've always wanted to have at college.