It's not so much that the hands were difficult imo, was more that their attacks needed a little more delay after escaping and some spaces where they can't inherently grab you, like crouch spots. Something akin to how flying enemies worked in Terraria (Particularly the eyes) would probably do wonders and make the challenge of the hands more about hopping around the unpredictable patterns with hiding spots rather than the constant button mashing loop.
I like them in concept and were a unique hurdle for this kind of game, same for several other things presented here, I have faith in time you'll improve!