Subreddits like r/Roms maintain a comprehensive "Megathread" that links to verified repositories for nearly every system.
A primary resource for "Best Of" sets and complete collections. Popular packs like the "Tiny Best Set Go" or "Cylum's ROM Sets" are frequently hosted here for direct download. pack roms para retroarch android link
Pack ROMs for RetroArch Android: The Ultimate Guide to Retro Gaming on the Go pack roms para retroarch android link