FWIW neither KDE nor gnome are Window Managers (WM), they are Desktop Environments (DE). WMs are significantly different from DEs in terms of what they provide and how they are constructed. WMs are more of a builder’s kit and less of something you just install and use. If you like doing things in a specific, unique manner you might enjoy WMs. Be advised they are, almost always, much more detailed in terms of their installation.