I have read many conflicting things, like always. Just wondering if there's a safe way to use several DE's on one distro without messing up my damn computer lol I've tried it several times and it always messed things up. I'm currently brand new to fedora workstation 38 too btw. Thanks alot
The program responsible for logging in and starting your window manager is called the display manager. Sddm is the default for KDE and GDM is the default for Gnome.
Technically, you don't even need a display manager as you could login and start the window manager manually directly from the TTY. That's just mainly useful for when you break something in your display manager config though.