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.
As a former fencer I'm going to need to take a breather. That being said, depending on where you are you may be able to find sabre fencing. Pretty much everything in that is a legal shot, plus you got the nifty mask.
Another option is trail running. You can still run up and down ski hills like a mountain biker, but it might get you close to that rush without risking the more serious of injuries.