@EspressoBean21 That could mean the permissions are borked on the main account's Documents folder, in which case you could try this:
https://answers.ea.com/t5/Technical-Issues-PC/new-install-windows-11-can-t-start-damaged-or-missing-game-files/m-p/12115824#M241041
I wrote that answer for Sims 4, but the same principle applies.
Please also make sure that the main account's Documents directory is C:\Users\your username\Documents, that it's not still somehow pointing to OneDrive. You can check by opening Command Prompt (you can search for it) and running this command:
reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders" /v "Personal"
Please copy and paste the command rather than trying to write it out. This will output the location of Documents, and like I said, it should NOT have OneDrive anywhere in the file path.