Brightness controller does not work on Fedora KDE Desktop 42

On my Acer Nitro 5 AN517-55 laptop i've migrated from Windows 11 to Fedora 43. It was unstable and downgraded to Fedora 42. But, the brightness controller does not work. Not in settings nor the widget. I've tried to reinstall Nvidia drives, that did not work, tried it trough the terminal, that does not work either. How can i fix it?