These are either:

Arjun uninstalled everything, factory reset his phone, and went back to playing Grand Theft Auto: Chinatown Wars —the real GTA that actually runs on PPSSPP.

Grand Theft Auto V was never released for the PlayStation Portable. The last GTA games on PSP were Liberty City Stories , Vice City Stories , and Chinatown Wars .

After some research, Alex stumbled upon a website that offered a PPSSPP ISO file of GTA V in 7z format for download on Android devices. The website claimed that the game would run smoothly on most Android devices, and all you needed was to download the ISO file, extract it, and load it into the PPSSPP emulator.

: Some developers have created standalone fan-made "Beta" versions for Android that allow basic free-roaming in a recreated Los Santos map, though these typically lack the full story and complex physics of the original. Risks of "Highly Compressed" Downloads

The original PSP has only 32MB to 64MB of RAM, while GTA V requires several gigabytes to run on consoles like the PS3 or PS4.