https://github.com/lordamit/Brightness works fine for me.
NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.
New to Linux: how to do I install software that was only packaged for debian distros?
2 projects | reddit.com/r/Fedora | 7 Nov 2021
Screen dimming app
2 projects | reddit.com/r/Fedora | 1 Nov 2021
1 project | reddit.com/r/linuxmasterrace | 2 Jun 2022
In case I wasn't the only one wondering: you can in fact install Linux without removable media by booting the installer in a VM and attaching your hard drive as a raw disk, and it's only ever so slightly painful.
2 projects | reddit.com/r/linux | 10 Aug 2021
How to make a program not get detected by AV?
1 project | reddit.com/r/AskProgramming | 29 Jun 2021