I spent 4 years during and after covid looking for volunteer opportunities. People just weren't using anything. I'll agree with you that many of these groups may be dysfunctional. They seemed to want money (the ones I talked to) not actual people.
Freemasons: what do they even do? I just know a few secretive fat white guys who belong. They're serious about it. They don't talk about it. Why would I join? I have no idea what they do. Not obviously recruiting in my area.
Boy/Girl scouts: I wasn't able to have a kid and so couldn't volunteer here or sports. It's kinda creepy to do so without a kid. Not obviously recruiting in my area.
YMCA/YWCA: this seems like a straight up company these days. Do they even take volunteers? I don't see any recruiting for it.
Kids who code / other code bootcamps: sent multiple emails. All I got back was marketing asking for donations if I even got that. They did like 2 events a year.
I do volunteer EMS/Fire/Ski Patrol... That requires actual training. Groups were obviously recruiting once I had the skills. They need people to help run large events / medical.