The most reliable versions of the cheat database are hosted on community platforms like GitHub, which are regularly updated with new codes, 60 FPS patches, and widescreen fixes.
The installation process is similar across all platforms; you must place the file in the specific "cheats" folder created by the emulator. 1. Locate the Cheats Folder Cheat.db Ppsspp
Another comprehensive source found on GitHub . How to Install cheat.db on Android, PC, and iOS The most reliable versions of the cheat database