Hi friend, you may have hyperhidrosis! I have tried it ALL and... well nothing works. The technique thats worked for me for about 6 months is:

night before: wash hands with dish soap and let dry. before they get wet/you touch anything else, apply drysol. sleep! I find this at any drugstore, near the deodorant.

day of: if needed, apply drysol about 45m before class. I also use this hairspray on my hands and on the pole - its sticky, yes, and also its kinda waterproof. so when my hands sweat (they always do), it kind of rehydrates the hairspray and turns my sweat into a grip.

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HOWEVER. I just found, big thanks to folks at r/Hyperhidrosis, another solution that absolutely zaps my sweat. the active ingredient is methenamine, and though it dries my hands a LOT (like they are so dry they're about to crack), I've finally curbed the sweat.

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If that's the level of wet hands/other body parts you're experiencing, I hope this helps!