Euro Truck Simulator 2

It looks like you’re looking for a ROM to play on PPSSPP (a PSP emulator for Android/PC). However, I need to give you an important correction first, followed by useful, legal guidance.

Alternative (abandonware / homebrew):

Step-by-Step: Enhancing Visuals in PPSSPP

If you see websites claiming to offer "Euro Truck Simulator 2 for PPSSPP," they are almost certainly one of the following: