Socializing well is one of the hardest struggles of being a human, and even people that are naturally social still may not get along well with others. I like to recommend the book "How to Win Friends and Influence People" by Dale Carnegie. Think of it like a "For Dummies" book on socializing. It has a lot of real-life anecdotes for difficult social situations people overcome and how. I should mention I just pirated the audiobook for it though.
Also, like others have said, I like listening to Healthy Gamer on youtube/twitch. He's a real, active therapist with a lot of experience helping people with these kinds of things, particularly for gamers. You can also just play it in the background while doing other things.