You could try finding a used key fob on eBay. But you'll need to get it programmed by the dealer. Or maybe you can find someone who can fix the shell of your old key.
My 2020 Taycan 4S has an annoying rattle from the front passenger window on bumpy roads. Pulling the window down seems to stop it, so I suspect it’s the window against the frame. The dealership couldn’t fix it, any tips for solving this?