Well, afaik, PopOS! does not have a … handheld PC oriented flavor, so… you could get it to work, but likely only via a dock, keyboard and mouse and monitor.

It may partially work, to some extent, as a handheld, but it won’t be able to… leave desktop mode, basically, unless you manually figure out how to set up everything you need for that game mode transition.

Bazzite on the other hand… comes with all that prebuilt in, is designed around that as a fundamental principle.

docs.bazzite.gg/General/FAQ/

docs.bazzite.gg/…/Installing_Bazzite_for_Steam_De…