This is going to go against what a lot of people will tell you, but my thought is that you should try to challenge yourself to be social and learn to develop those skills, rather than continuing to develop antisocial skills in your comfort zone. To that end, I'll suggest you look into things like Toastmasters or another public speaking club, and tabletop RPGs - in person, not on Discord. You will have to overcome the challenges of being social and learning at the same time, but I think that those would be valuable experiences for you. Local boardgame groups will also be helpful, as you'll be able to focus on the game rather than the socializing.

Everyone needs to learn how to be social. Don't hide from it.