@xTinyhugs As a test, please try playing in a clean user folder. Move the entire Sims 4 folder out of Documents > Electronic Arts and onto your desktop, and when you launch the game, if it launches, a clean folder will spawn with no content. (Your saves and other content will be intact in the folder you moved but temporarily not read by the game.) Don't add anything to the new folder yet; just let me know whether you can get far enough to start a new save and play in live mode for a bit.
If that doesn't help, please disable your antivirus, temporarily of course, clear the EA App's cache again, and repair Sims 4. Then try to play, still without moving the old Sims 4 folder or its contents back into Electronic Arts.
If that doesn't help either, please create a new admin Windows account and try playing in that. Make it local, as in, don't tie it to your Microsoft login. You'll be able to (try to) launch Sims 4 without reinstalling anything, but your user content won't be available. That's fine for the purposes of this test.