Hmm... Should I get into dumb VR games like BeatSaber? I want to do something that feels like intense fighting. Biking fast enough it's satisfying is too dangerous. Maybe unrealistic point based karate would be fun. I tried fencing once but it was shockingly lame. I'd join a dodgeball league but there aren't any, everyone wants to do like baseball and volleyball. Hmmmm. I wonder if paintball would be fun or tedious, I could see it going either way.
Seconding BJJ. I got into it in my late twenties and even though it's kinda weird learning from a nineteen year old instructor you get over it pretty fast.