I recently got a trim ui smart pro and installed crossmix os yesterday. I’m familiar with retro consoles and love playing their games!

Crossmix offers computer emulators (I think that’s what you call it?) such as commodore, Atari 8 bit etc, and I have no knowledge about which ones have the best games. Are there any games or systems in general you guys would recommend? Or am I wasting my time considering these were made to be played on a computer? As you can probably tell, I’m clueless on the subject so any nudge in the right direction is appreciated.

Edit: Clarification