Sims 4 not launching

SIMS 4 launch from STEAM not working. When I try to launch the game from the STEAM app. This has been a problem for a month and I would like to play the game -so its time to fix the problem.

These are the things that I have tried so far.

- Uninstalling EA App

- Updating EA app

- repairing EA app

- uninstalling and reinstalling the game

- verifying the game files through STEAM

- Clearing Cache in EA app

- rebooting the computer repeatedly

What am I missing?