SweetShineKah I don't know what exactly OneDrive is breaking, so I wouldn't know how to fix it. But it's easy to get OneDrive out of the picture entirely. This guide is long, sure, but most of it doesn't apply to you; just scroll down to the "I want to get rid of OneDrive" section, or, if you prefer, the section immediately above, which shows how to stop OneDrive from syncing Documents without affecting its other settings.
[CURRENT ISSUE] Sims 4 saves/user content disappearing (PC) | EA Forums - 11838402
Once you've done that, you should be able to create a symbolic link for whatever folder you want, to whatever location you want.
