Will I really meet the people who matter after I graduate high school?

I’ve always been told for years “the people who will really change your life, are the ones you meet in college.” And it’s been stuck in my head, at this point I’m starting to feel like it’s just what adults like to tell me to make me feel better about myself . I’ve been told it in every circumstance, moving high schools, struggling to make new friends, struggling to find someone romantically interested in me, and losing friends through the years. Everytime I hear that saying I feel like losing it, because what if it isn’t true? And all this time there is a genuine problem with me and there’s no hope for the future.