Try with a lower res mesh object
Manually weight paint
Try using Bone Envelopes instead of just auto weights. Additional weight painting can be used for any corrections
I tried it some time now to get same results like in the picture of yours but it’s still messed up. Can you explaine more in detail?
Sorry for the question but it’s my first time in rigging objects.
Maybe you can send me your file so that i can notice the differences .
You need to size the bone volumes to match the mesh you want to deform, by default they are too large so influence too much of the surrounding vertices
Is it possible that you send me your file because it still doesn’t work for me.
I would maybe also understand it better if i compare my tries with yours.
I looked at your file. The hand model is all goofy! Faces on the hand is flipped inward. I tried to flip the face out, but it will not flip!? When you display face normal, something goofy is going on around the nails. The faces there must be all messed up. So I chopped the nails off. Then face normal worked fine and automatic weighing worked fine as well!