Save File Not Being Recognized By Game

tiesewllms​  It looks like your computer's Documents directory is still in the OneDrive folder.  You can try moving it the standard way first.  Open a File Explorer window, right-click the Documents icon (the special one, not a regular folder icon) in the left panel, select Properties > Location, and change it to C:\Users\your username\Documents , without the OneDrive part.  Then restart your computer and see whether Sims 4 uses the same location.

If you can't move the folder—you get an error, or the change doesn't stick—here's how to get around it:

https://support.microsoft.com/en-us/topic/operation-to-change-a-personal-folder-location-fails-in-windows-ffb95139-6dbb-821d-27ec-62c9aaccd720

Please be very careful when editing the registry.  If you follow the instructions exactly as written, and change the location back to %UserProfile%\Documents without changing anything else.  Editing the registry incorrectly can break anything up to and including your Windows install, but the steps in Microsoft's guide are safe as written.