Unity MAC game won't open on MAC

I have a game I built in Unity on my Windows PC and I’ve selected MAC OSX as my target platform. After publishing my build, I then copy my game from my Windows PC to my MAC PC via USB and try to play the game. The splash screen loads and I can see my game’s logo and the Unity logo, but when the actual game is supposed to begin, MAC just closes the app with no error.

What could be causing this? I’ve tried everything suggested in various other posts.

install unity on the mac (its free after all, and you can use paid licensed version on 2 machines I believe) and build it on the mac.