I owned a gaming pc for 10 years before getting a steamdeck, “proton” and “TDP” were foreign concepts to me as well, I never tried linux before and I’m amazed of how well it works for games after using this device

I had that issue with steam rom manager not installing from emudeck, what I did was get the standalone installer from github or something, that was the one hiccup I ever had with emudeck but it sure was a head scratcher