Sims 4 crashes on startup

chwoieeee  I've split your post into its own thread because the original was becoming a collection thread of sorts and getting too unwieldy for me to keep track of everything.

Anyway, thanks for the dxdiag.  When you moved the Sims 4 folder, did a fresh copy download?  OneDrive does this sometimes.  I ask because the Sims 4 errors in your dxdiag look like mod-related crashes, although that's not the only cause of this exact error.  Point is, please open Documents > Electronic Arts > The Sims 4 > Mods and confirm that there is currently nothing inside other than Resource.cfg.

Aside from that, your C drive is very low on space.  It's probably not causing the Sims 4 crashes, but it would be best to clear at least another 15-20 GB, for a total of 25-30 free, for the overall health of your system.  And if OneDrive did redownload your user folder, that could explain why you suddenly have so much less space than before.

Please also update the driver for your graphics card.  You can use the newest Game Ready Driver here:

https://www.nvidia.com/en-us/drivers/

Run the installer as an admin: right-click the download and select "Run as administrator."  Restart afterwards and before trying to play.