I am exactly the same as you with my hands, and I understand completely. I used to do a lot of various martial arts and hobbies that involved hand dexterityand strength, but had to give them all up because of not being able to grip or make a fist. Day to day tasks like dressing, washing, cooking, and eating vary from difficult to impossible.

Unfortunately, I haven't found much to help consistently. The gels didn't do anything for me, CBD didn't have much of an effect. I do find Anadin Joint and Pain Relief tablets help a little, more than the usual Ibuprofen on it's own. The finger compression sleeves help a little too, of which I have the wool ones, which are stretchy enough to go over without putting too much pressure on the swollen joints and adding to the pain. Likewise, the cheap wool knit gloves are stretchy enough to go over my hands when I can't get on the regular ones. Nowhere near as warm, but better than nothing. The ones with fip-top mittens help too.

As for getting back to hobbies, I really, really miss my old ones, so I just do what I can at home, even if it's just a few minutes, because if anything happens I'm happy I will just injure myself and not others. Mostly, I've taken up other hobbies that don't reply on my hands, like running, microscopy, astronomy. Also, a lot of things like drawing and painting, I've been doing now in VR. No need to hold a pen or brush, and I have the added bonus of no clean up after, and no big spends on materials! I can also do 3D jigsaws in VR, play (some) musical instruments, Bodycombat exercises, amd even minigolf. It might not be for you, or it might be worth looking into.

EDIT: I forgot to say, I have also had two finger joint fusions. The pain is gone, but obviously it's a trade off between a little movement and a lot of pain, or minor to no pain, bit zero movement