I installed NoMachine, realized it wasn’t going to do what I wanted, and then uninstalled it. Upon doing so and rebooting the system I booted to a black screen with a mouse pointer.
I spent some time googling and found people reporting the same issue and a couple fixes that worked for people in different distros. Sadly, those fixes don’t work for me in my own distro. What did allow me to boot back up was simply booting into rescue mode and reinstalling NoMachine, which returns my system to working order.
I am running Nobara, a Fedora based distribution running KDE.