How Do I Play Sims 4 if I no longer meet the requirements?

@AKissofPineapple 

You don’t need to run the Legacy version as your Mac supports Metal.

Try a whole new clean game first, free of all your saves, Mods etc. - https://answers.ea.com/t5/Technical-Issues-Mac/READ-FIRST-Sims-4-Mac-Help-Guides-and-Troubleshooting/m-p/4612394#M163

Then do a super repair:

1. In your Applications folder, or wherever you have the game installed to, right click on the Sims 4 app and select Show Package Contents.
2. Navigate to Contents > Mac OS.
3. Right click on The Sims 4 and select Move to Trash. Don't drag the file as it will only move an alias and leave the original in place.
4. Now open Origin, right click on The Sims 4 in your Games Library and click Repair Game.