Have you tried using the Fluxbox implementation version MX Linux makes available? They have put tons of work into their Fluxbox implementation. Perhaps it will provide you with some useful ideas/ help. Their Forums are also quite responsive & helpful. FWIW . I am not a paid announcer ;) …

I have no idea why this link did not appear… here is a retry on the material.

https://eirenicon.org/2023/12/13/xorg-wayland-transition-thoughts/

Another factor impacting memory significantly is the kernel used. My liquorix kernel “updated” this morning and I am using 200MB less memory than yesterday; it must be my lucky day. 😜

Given your observation, I’m guessing you have not used i3wm very much. i3 is extremely flexible and powerful. But as with most Window Managers, i3wm is geared towards those who prefer to build a highly customized environment. If you haven’t already, this is a good read. https://i3wm.org/

Thank you for noticing my omission. I added the following: NB.: Dropbox is shown because it runs at login and is a large contaminant in terms of memory utilization on each window manager (setup). If you do NOT use Dropbox you should expect your idle memory use to be lower than my total by some 600MB.

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.

If you look through this thread, you may notice that almost everything is biased towards personal preference(s). I recommend you research for those aspects of security AND privacy that interest you and select the tools, distros that you prefer. The beauty of Linux lies in its variety. Use what pleases you and serves your needs.

Truth be told, the “good-est” one will be the one you like best…

If you want others’ random opinions try review sites like those provided below:

https://www.google.com/search?q=best+ubuntu+distros