Mwm: an X11 window manager in 20 lines of code
Is KDE too much for you? GNOME tries to do too much? Xfce still a bit too fancy? Do you need something smaller? Even more minimalist? What about a mere 20 lines of code which provide the absolute barest possible minimum of window management functionality?
You need mwm.
This is the smallest, actually usable window manager I know about. Ev
https://www.osnews.com/story/142853/mwm-an-x11-window-manager-in-20-lines-of-code/