Please look something up on the subject. Achieving a curved hand position is not something that is recommended anymore. Discussions on the subject should help you further.
I think that's rather oversimplified.
Yes, it was simplified. I suggested that the OP do research on the subject since a lot has been written about it. Nothing wrong with that.
Cup a tennis ball in your hand.
Or, if you're going to read all the related posts on here, a large glass of scotch.
I think I would need the whole bottle...Anyway, I think my favorite was "Imagine holding a little bird in your hand"... Ever tried holding a bird? They are pretty strong and twisty and you really need a firm grip...unless it's a dead bird
Sure, but my point is that the value of curved remains very widely recommended. There's nothing even close to a consensus that this in inherently negative.
Your point was that of finding something that I did not say, and arguing against it. Almost all of your posts do that.
So trying to have "curved" fingers as a goal is unnatural and undesirable since it doesn't further the goal of actually playing real pieces.Start with Chopin's idea and go from there on an as needed basis.