I want to play ROMs on PPSSPP but I'm scared to download ROMs because I'm afraid to get malware or virus on my device. What can I do to safely emulate ROMs?

What is the best setting for PPSSPP? What are the settings and their

I want to play ROMs on PPSSPP but I'm scared to download ROMs

SSF Tutorial Video Game Emulation for Newbies

How to get PSP + Roms on your PC/Android!