No worries, bazzite has you covered there too.
This is already being done in Europe to an extent. It is doable, but it requires a shift in thinking and more investment as well as planning. It's not really about getting rid of plastic. Just single-use plastic.
I can second bazzite. It. Just. Works. But it is built differently from the distros that everyone has heard of like arch & Ubuntu, so it's best to read up on how to install non-flatpak programs.
Keep in mind that steam can run Windows programs for you with it's emulation layer. It's not the only option, but it is convenient as an app launcher.
Just a suggestion for a free web-based VTT, owlbear rodeo is super simple to learn, and quite flexible.
I haven't tried it out on mobile, but I'd bet it's worth a try.