https://wccftech.com/fpps4-playstation-4-emulator-can-run-two-commercial-games/

PlayStation 4 emulation is still in its infancy, but there are a few active projects that look very promising, such as fpPS4.

This PlayStation 4 emulator developed by red-prig is in an early stage, but it is already capable of running two commercial games - Sonic Mania and We Are Doomed. The first one runs well enough, which is not surprising considering how it is not a particularly demanding game, while the second is definitely not in a playable state, but the fact that it gets in-game is impressive nonetheless.