stewebabe Just to be clear, when you moved the Sims 4 folder out of Documents > Electronic Arts, did it make any difference? Were you able to move the folder at all, or did you get an error, and what did it say?
Your dxdiag lists some generic Windows update errors, so please run a couple of basic checks of your Windows system files:
- Hit Windows key-X
- Choose either “PowerShell (Administrator)” or “Windows Terminal (Administrator),” whichever option is offered
- Inside the window that appears, copy and paste “DISM.exe /Online /Cleanup-image /Restorehealth” without quotes, and enter
- The system will start validating soon. If it throws an error, please list it here
- After it reaches 100%, hit Windows key-X again
- Again, choose “PowerShell (Administrator)” or “Windows Terminal (Administrator)”
- Inside the window, copy and paste “sfc /scannow” without quotes, and enter
- Post the message you receive here
Restart your computer, hit Windows key-i, select Update & Security, and click the box to check for updates. If any install, restart again afterwards.
If this doesn't help, please create a new local admin Windows account. Here's how:
https://support.microsoft.com/en-us/windows/manage-user-accounts-in-windows-104dc19f-6430-4b49-6a2b-e4dbd1dcdf32
The way to make it local is to decline to add an email address; you can eventually choose to "Add a user without a Microsoft account." Make it an admin account too. Sign into that account and try to play, and let me know what happens.
Please also let me know what antivirus you use, if you use anything other than Windows Defender. Your dxdiag lists a couple of crashes of a component of Defender, and while these are probably not serious, the issue could be a conflict between Defender and a third-party antivirus.