Hi AdamSergison,
Thanks for visiting Microsoft Community.
I understand the difficulty and confusion you are experiencing with OneDrive file synchronization. I will assist you in troubleshooting the issues you're encountering with your OneDrive sync folder.
First, ensure that your OneDrive application is linked to only one account.
Next, we need to ascertain the current status of your files – specifically, where the Personal Files folder containing all content actually resides. If it's no longer found locally, it may have been uploaded to the OneDrive cloud and transformed into an online-only folder. To confirm this, log into onedrive.live.com, and in My Files, search for this folder, or start by looking for the Desktop folder, then delve deeper to find this folder. If you locate it there, download the folder to your local machine as a backup to prevent potential loss during future use.
Regarding the issue of broken links you mentioned, this occurs when desktop file synchronization is enabled. OneDrive, while backing up data to the cloud, releases the corresponding desktop file space, making it online-only (indicated by a cloud icon at the lower left corner of the file). The path for the file or folder changes from something like Desktop/... to OneDrive/.... You can right-click this file and change its sync status to Always keep on this device (indicated by a green checkmark at the lower left corner).
It's important to note that based on our current testing, once you disable desktop syncing, both the synced status files and those always kept on the desktop will vanish, and a "Desktop OneDrive shortcut" file will appear. Opening this shortcut allows you to find previously synced desktop files, including those with synced status and those saved locally. Both types of files can be accessed, and you can drag and drop them back onto the desktop.
I hope the above information proves helpful. Should you have further questions or need additional assistance, you can also contact OneDrive's support team via email. Here is the link to send an email to the OneDrive support team: https://go.microsoft.com/fwlink/p/?LinkId=528676
Need to make sure you visit onedrive.live.com using your browser - click on the link above - and it will automatically bounce back to your OneDrive web side and allow you to send the email.
Wishing you a successful resolution to your problem.
Best Regards,
Jonathan Z - MSFT | Microsoft Community Support Specialist