I tried kicksecure + kde in my pc with a nvidia RTX 3070, and on the moment I install nvidia packages it broke and I don’t know which could be the problem. Wayland don’t works and x11 works but the compositor don’t works well.
I know kde is not supported but just fyi, if somebody have the same issue too, you aren’t alone jeje.
Debian + kde worked well, so I suppose some package could be broken it.