If you want the "First-person horror + Gothic village" vibe, here are the actual PSP games you should download and run via PPSSPP:
If you want that gothic, "spooky castle" vibe on your phone right now, download . Wait, that’s Parasite Eve. I’m joking, but seriously—look into Resident Evil: Revelations (3DS version) . While not native to PSP, the PPSSPP scene has incredible Homebrew ports. Resident Evil Village Ppsspp
However, the community’s desire to play this survival horror title on mobile has led to several workarounds and "homebrew" projects. The Truth About Resident Evil Village on PPSSPP If you want the "First-person horror + Gothic
Here is the final, honest advice. You are searching for because your hardware is weak. But there is a better way to play the actual RE8 on your low-end device without a PSP emulator. While not native to PSP, the PPSSPP scene