Sims Keep Freezing and I feel like I've done everything!!

@bunnykujo  Quick Access lists folders you open frequently, so it's no surprise that the Sims 4 user folder still appears there.  The question is whether this folder still appears in Documents > Electronic Arts.  You likely have a folder there, since you've launched the game at least once after trying to move the old folder.  But the important detail is whether the Sims 4 folder inside Electronic Arts is the old one or a new one.  The old one would have your saves and lastexception files and everything else from before you started troubleshooting; the new one should have all new files and no saves or mods.  Let me know what you find.

If the old folder is still in Documents > Electronic Arts, it's possible that OneDrive downloaded a fresh copy for you.  In that case, try pausing OneDrive syncing, which you can do by right-clicking the cloud icon in the lower-right corner of the screen.  Then move or rename the Sims 4 folder to allow the game to create a fresh one.

Please also let me know whether this problem happens in a new save, one that you create now for testing purposes.  I'm not saying your old save is toast, only that this is a useful test.