I'm not a gamer myself. Not serious, anyway. I live vicariously through my son.
He's on Twitch/Pulse and Discord for tips and techniques to improve his skills. He was also on Slack, but doesn't use it much. He gets exposure to professional level skills and competition. His gaming skills have improved immensely, watching and playing with these people online. Enough so that all his high school and college buddies are saying he should try to play professionally as he's way better than them now. But he not quite there yet. Needs better gear and connection.
I find these gamer-centric social media fascinating, for its business potential.