While there is significant interest in playing Farming Simulator 19 emulator, it is important to clarify that
The PSP's hardware is not powerful enough to run the GIANTS Engine 8 used in FS19, which requires at least 4GB of RAM and a dedicated graphics card on PC. Platform Differences: Download For Fs 19 On Ppsspp
Here is the danger:
To help point you in the right direction, are you looking for native Android farming games , or are you specifically trying to find great simulation games to play inside the PPSSPP emulator While there is significant interest in playing Farming