Lately I've been reading about social value and realized that this is my insecurity. I feel like my value is lower than it should be because I'm not very social and don't really go to parties and stuff. This makes me think that I can't have girls who are much more sociable and enjoy going to parties because they would think I'm boring. And also this makes me feel like that extraverts have higher value than me. That really crushes my confidence with girls.
I imagine a scenario where I'm taking a girl out and unexpectedly there are one or more of her friends (possibly male) in the place where we are having date. She goes to her friends and that's it my chances are ruined because I'm not as fun and entertaining and she forgets that she was supposed to be with me not her friends. Not that I feel anxious about that because it's unlikely but anyway I feel weak compared to guys who are able to talk endlessly and have fun interacting with people, while I'm serious most of the time and have fun sitting on my couch at home playing video games.
How can I overcome this train of thought? I'm aware that girls like mistery but they like having fun too which I can't provide on the same level as extraverted people can.

Go out more. A lot more. Do approaches. Self amuse. Game, game and more game. This is experience. Going out basically every day, or at least as often as possible, doing opens, interacting... you are rewiring your brain.

I used to sit and play transport tycoon or dwarf fortress for weeks at a time. NEVER went out. But after sticking to the plan and going out I have learned the habit of being social. That is what Cold Approach Pickup is about. These other people are more comfortable in social situations because they have done it more, period. But if you have a method, you will get better and have more fun and be more comfortable than all these other people you are thinking of. Dude, PUA is revenge of the nerds. You'll seem like a wizard to your friends in no time flat.