The confusion is understandable. PPSSPP is the gold standard for PSP emulation, and the PSP had two iconic GTAs ( Liberty City Stories and Vice City Stories ). However, San Andreas was too large for a UMD disc. So, when you search for this term, you are actually looking for:

⭐ (1/5) – High risk of malware, low chance of a playable game.

If you specifically want to use the PPSSPP emulator, you should look for the official titles that were actually designed for the platform: Grand Theft Auto: Vice City Stories Grand Theft Auto: Liberty City Stories Grand Theft Auto: Chinatown Wars The Real GTA San Andreas for PSP!