Like everyone else has said: Being a virgin at 23 is no big deal. Not knowing what you want to do with your life at 23 is totally fucking normal. I think that describes most 23 year olds...
As for finding out who and what you're interested in sexually, you gotta start somewhere. You mentioned getting naked and jacking off with another guy. Why not try Scruff or Grindr and look for a guy who's interested in that? "Gamer looking for j/o buddy." Sounds like a good time. Around here there are loads of gay/bi men your age who would be down for an evening (or afternoon or whatever) of jacking off and gaming. I know you live at home (also very normal for 23 year olds), but I'm sure there's a lock on your door.
If you do it and you like it, you know more about yourself and you've started experimenting. If you do it and you don't like it, you know more about yourself and you've started experimenting.
Alas, you'll never get less shy unless you start interacting with people more actively. You can do it here, online, so why not try to meet some guys online. Start there, and move on.
Good luck! I've never met you, but I'm rooting for you.