If you want a stable experience without using unofficial mods, these original PSP titles are fully compatible with PPSSPP:

You're looking for information on downloading a PPSSPP file for Dragon Ball Z: Kakarot. Here's some helpful text:

: While the visuals might look like Kakarot, the gameplay remains that of the original PSP fighting game, not the open-world RPG experience found on consoles. Where to Play the Real Dragon Ball Z: Kakarot

Most of these mods are built on Dragon Ball Z: Tenkaichi Tag Team , a legitimate PSP title.

is a critically acclaimed action RPG, there is no official version of this specific game developed for the PlayStation Portable (PSP) or the PPSSPP emulator. Official Game Availability Released by Bandai Namco