That’s not normal, Debian works fine with NVIDIA cards including with their proprietary drivers. You can follow https://wiki.debian.org/NvidiaGraphicsDrivers
How do I know? Been running such a setup for years including for gaming, even VR gaming, and tinkering with local AI models for evaluation (and disappointment) and works well.


Window Rules and Custom Shortcuts from KDE Plasma, just earlier today I binded Meta+Ctrl+k to start Konsole in the directory of my latest modified prototype, open a per directory script which e.g. opens a browser tab, opens Vim in the file to edit, positions those windows properly, here browser on left half, console on top right corner.
Window Rules with its window picker is very convenient to get conditions and properties to apply. Custom Shortcuts is just a list of shortcuts you can add to start anything from anywhere.
Also I added my own wiki as a KRunner Web search, so if I type Alt+Space then PIM keyword it searches directly to my PIM from the center of my screen, also from anywhere.