In your App Launcher, under System, you should see Software Repository Selector and it makes it so easy to add the Repo from the Desktop, if you can get there.
Software Repository Selector was a “root of all evil there” My system goes nuts but if i open Software Repository Selector it goes nuts instantly.
This type of craziness is basically my prime reason for not to use any kind gui tools for system administration ever.
But im happy that this situation occures, because it forced me to look on other things dnf have to offer beside - dnf check update and install. (Im a dpkg and apt guy).
On most occasions I edited my config files manually.
All rpm distros are different in that matter.
To make more sense of it.
Im a Slackware guy who used Debian for years, because debian to some degree or extend allows to use slackware tricks to maintain the system.
RPM distros have some tools cli/gui that do the things I’ve done manually, automatically or semiautomatic.
PS. we have systemd in linux since forever.
Yet it is still easier for me to use sysv or runit then freaking systemd.
Do I use it? Yes… Do I hate it? No. Do I hate to use it? Fuck yes! With passion.