I think I understand your mentality, correct me if I'm wrong though. What bothers you is, to put it vaguely, that you're not getting the same experiences as everyone else. In your eyes, everyone goes out every weekend, and either goes to a bar to find a one night stand, or is ****ing their significant other until the sun comes up, or a FWB. This is something some people do, sex is a part of people's lives, but not nearly as much as you might give it credit for.
As far as fitting in, and experiencing life the same way everyone else does, going to bars and clubs and hooking up is not necessary to be "like everyone else." Again, for some people this is a major part of their life, and if it's something you want to incorporate into your life, that's completely ok too. But you shouldn't feel like you MUST in order to fit in.
If I can give you any advice though, it would be to either change your approach, or your mentality. If hooking up at bars something you really want, learn other approaches to improve your chances. Or, what I would recommend, try to change your mentality about what you want. You may find going out on dates with girls you met on a dating site to be more enjoyable than spending the night dancing to ear piecing music. Or something else completely. Just don't limit yourself to doing one thing one way in order to be happy. Everyone is different, and thus is not doing the exact same thing every weekend. Good luck :thumbup: