If you're comfy with a bit of code and there's a nagging thing you wish you could change on your Mac, Hammerspoon (https://www.hammerspoon.org/) is a great tool.

For example, I use it to add a shortcut that completely hides or shows Zoom's on screen controls while sreen-sharing, but in a way they don't pop up again if you press ESC (I'm a developer, so ESC is kinda a necessary key).

This one looks polished, if the nag it's bothering you is covered.