Does anyone have dating tips for a non drinker?

I'm 41 and live in Southern California. I don't drink anymore and no longer enjoy trying to meet people at a bar or club. I'm also not part of the scene. My hobbies include going to a HIIT gym, rock climbing, EDM shows and festivals. People tell me I'll find someone during one of my hobbies. I have yet to meet anyone at my gyms or at an EDM event. I know plenty of people they have found success at the gym and concerts. it just hasn't happened for me yet. I'm open to expanding my circle it other hobbies.