Spine's Wine-like PS4 emulator for Linux ONLY is capable of playing some basic commercial games, albert with usual early in development limited performance and accuracy. That said, Flatpak instructions is available on Github or you can download latest release from here (dated 01/09/2021).
It's still very actively developed and seems promising.
PS4Delta is a very high level PlayStation 4 emulator, written in c++. It's quite early in the development stage and barely manages to initialize all firmware modules though is actively being worked on.