@vaniapiller The Sims 4 crashes in your dxdiag are generic, unfortunately, meaning they don't provide any useful information on their own. So it might take some experimenting to figure this out. I'll list a few easier interventions, which you can do in any order, and we'll go from there. These aren't fixes or even good workarounds, just tests to see whether we can narrow down the source of the problem.
While testing, don't open any programs other than Steam and the EA App, and run these two as an admin: right-click the desktop shortcuts and select "Run as administrator." I would also suggest completely disabling the Steam and EA App in-game overlays; the latter is under Settings > Application.
Please disconnect your 4k monitor, while your computer is off, and try playing on the 1080p monitor. Try it in both fullscreen and windowed modes, quitting and reloading after changing the setting, and make sure to enable vertical sync in fullscreen mode.
Try disabling your antivirus and then repairing the game in Steam before playing. As long as you don't do anything else at the same time, your computer should be safe.
Try playing with your computer offline. You can sign into Steam and the EA App and put the App in offline mode before launching Sims 4.
Finally, try playing in a clean boot:
https://support.microsoft.com/en-us/topic/how-to-perform-a-clean-boot-in-windows-da2f9573-6eec-00ad-2f8a-a97a1807f3dd
The one service to leave enabled is the EABackgroundService, which the EA App needs in order to run. Disable the rest as described.
When you reboot your computer, go through the Task Manager's background processes list shutting down any service that doesn't absolutely need to be running, for example anything from MSI Afterburner to RGB software might still be enabled. If you accidentally kill a critical process and it doesn't restart on its own, just reboot your computer again.
You can try this with your computer online and offline.