Oh, and OP's question:
It has nothing to do with the hobby. It has to do with your personality. You're a people person and "being lonely" is never an issue or you're a bit (or more) of an introvert and it's harder for you in general to be around/get-along with other people.
Good news is that if you actually WANT to be less introverted all you have to do is try. Stop letting what you like define you to other people. Enjoying anime is a PART of me. Enjoying Video Games is a PART of me. It certainly isn't the WHOLE me.

