The LRPS2 core for RetroArch may be an option, but for the Steam version of RetroArch, you'll probably have to drag and drop LRPS2's files manually to install it, since there isn't a Steam DLC for it.
mrbigmouth502
joined 2 days ago
I watched a video about those the other day. You can't just slap Windows or whatever on one; you have to use Linux with a specific patched kernel in order to use them. Even then, there are severe graphical issues with Unity games, and you're not getting the full performance of a PS5 since these APUs are cut down to a degree.
Here's the video in question: https://youtu.be/_zbw_A9dIWM
It had its place in 2015. It was my introduction to Arch-based distros. Nowadays, I use EndeavourOS.