Minor correction, Steam Deck is arch based.
The only thing specific to Steam Deck in the guide is the Discover Store. This “app store” is actually a part of KDE, which is the desktop Steam Deck uses, when one switches to desktop mode.
The Discover Store is a way to install flatpaks, which are a universal application format that runs on all linux distributions.
On Febora flatpaks should be enabled by default. You might have to enable the flathub repository, which is the main hub for finding and installing applications.
Read more here : https://www.flatpak.org/setup/Fedora
The application “protontricks” which the guide uses to set up the game, can be found here : https://flathub.org/en-GB/apps/com.github.Matoking.protontricks
The guide might be a bit long, but only because it is rather verbose.
Take a read through, it might solve your problem. Go ahead when you have read it through, I am sure you can do it :)
I have had a bunch of problems with PS5 controllers recently.
I am noy sure you are experiencing drop outs due to physical limitations, rather due to (as I recall) recent restructuring of the kernel code handling connections to the controller and regressions introduced herein.
One way to rule out physical limitations, would be to stand next to the PC and see how it fares. What is your experience like then?