That's what everyone has always said, to just be yourself. But I don't agree with it at all. You should always be yourself, but set a boundary. You shouldn't pretend to be something you're not, but you shouldn't make yourself look like a loser infront of everyone by being yourself.
The thing about acting yourself, is there will inevitably be assholes. If you just go out there and show off your vidya skyrim shirt with no sense of shame whatsoever, they WILL call you a loser because you are different.
Just be neutral I suppose. You can still talk about videogames, but don't just spout out references and things to people who don't a) Aren't your friends, b) who don't follow the same hobby