LucyLovesMarvel Your dxdiag shows you have 25 GB free storage on C, which is not a lot but also not so little that it should be causing this issue, at least not with your user folder where it is. (I was worried it might be in OneDrive, which could easily be an issue, but the current location is fine.)
I do see however that your Nvidia graphics driver is from 2023. So please update it. Rather than installing the very newest version, try this one from a few months ago:
https://www.nvidia.com/en-us/geforce/drivers/results/257496/
It's new enough to be compatible with Sims 4 and pretty much everything else, but old enough to have been tested thoroughly. Plus, it's easy to update again if necessary.
Run the installer as an admin: right-click the download and select "Run as administrator." Restart afterwards and before trying to play.