I did some guided underwater caving myself in coastal reefs in Egypt.

I've been in tight caves, skydived and may soon buy an ultralight, climb without a rope (class 3ish) with fatal fall exposure, etc. I've managed to stay alive because of heavy risk assessment and mitigation efforts.

Cave diving is a whole different category of risk. I'd never attempt it. As a hobby it's certain death. Please say something about this in your post above.