I play video games, as does my (cis female) partner, all four of my closest female friends (also cis), and probably around 40% of the people I play online with are also female. I know there's an element of the traditional 'male nerd' gaming culture who wish it weren't so, and I know there's a subset of self-identified 'girly girls' who still see gaming as a 'male' pastime. It can be discouraging when you don't have a wide or diverse circle around you, and it can seem like you have to act a certain way to fit in, but in the world at large there is nothing abnormal about you or your interests. If you Google it, you will find a whole host of recent studies suggesting that gamers are pretty much split 50-50 between genders these days, and those with outdated views, however vocal they may be, belong to a shrinking minority.
And having said all of the above -- yeah, I had the same doubts as you at first, and wondered whether I was supposed to leave all of my old interests behind. But I spent most of my life not being myself in order to fit in, and I'll be damned if I'm gonna keep doing that now. It doesn't make you less of a woman to have doubts. It doesn't make you less of a woman to have your own interests, either. It just means you're a real human being who doesn't conform to some narrow set of stereotypes. I know it's hard at times, but you're doing this so you can be yourself, right? So be yourself, and be proud of who you are. 🙂