I have no friends

I feel as though I genuinely have no real friends that care to talk to me or hang out. I just started college, and all of the friends I made throughout highschool have started branching out and making new friends. I ask people for advice and all Im told is “be yourself, join clubs, talk to others” and I have but it never works out. I am incredibly socially anxious and talking to other people has always been difficult. My best friend that helped me through everything is now telling me I need to get new friends because all of mine have well left me. I used to be a horrible person and have worked tirelessly to erase and forget my old self, but sometimes i say or do things by complete accident that cause my relationships to get distant. I relentlessly apologize and keep trying harder to be better to be a better friend but I guess I’m just not good enough. Everyone already seems to have established their friend groups, so I feel like there is no place for me to ever make any friends. I have tried accepting that it’s ok to be lonely, but it never seems to work and I am left feeling empty and lost on what to do in this situation. I guess, all of this is to say: has anyone else been in this same situation? If so, have you found a way to either make peace with it or make new friends?