The other suggestions are great for SNES, but you could also go for the gusto and grab OpenEmu for all your Mac emulation needs. I’m looking for an emulator they works on Mac. In macOS Big Sur, you'll have to right click 'Open' the application and then select 'Open' to run it the first time in order to whitelist it as it isn't signed. Go to and click the swatch and download OpenEmu Experimental.
How-to: Running MAME / NeoGEO via OpenEmu and SDLMAME Most everything else emulatable on Mac - OpenEmu.