Where did I go wrong.

If you were optimistic, then you wouldn't have the troubles you have now. People have many emotions. You long for friends now, but why do you say you don't have any? Is it that you don't even have a superficial friend or you don't have a friend you can talk to. These are different, you are too young now, when you grow up slowly, you won't worry about this because there are too many things to worry about. Maybe a lot of adults will say to you that the main thing now is to study, and we never understand when we are studying. Wait until you need it to realize why you didn't study hard in the first place. Friends are important, but learning is more important, if you really think you are a very rip-off, then why not take control and learn to be a positive and optimistic minded person. That way, you won't be without friends anymore!