: Download DuckStation or OpenEmu and drag it into your Applications folder.

If you don't want to install anything on your Mac:

With Apple Silicon’s power, you can run Tekken 3 at 4K resolution with stable 60 frames per second, using a wireless PS5 controller, in widescreen. It looks better than the arcade original and loads faster than the PS1 disc ever did.

: Widely considered the best PS1 emulator available. It features a native ARM release for Apple Silicon Macs, offering incredible performance and features like 4K upscaling and "PGXP" to fix the "jittery" 3D graphics common in original PS1 games.