I lose Sharepoint sync

SharePoint limits

SharePoint has a limit on file path lengths, which can affect syncing. If a file path exceeds 260 characters (including the file name and folder structure), it can cause OneDrive to fail to sync. This is especially problematic when files are deep within nested folders.

*See the upper Link from Microsoft for more Informations.

OR…

Reset OneDrive Cache

You can reset OneDrive from the Run command:

Press Windows + R to open the Run dialog.

Type %localappdata%\Microsoft\OneDrive\onedrive.exe /reset and hit Enter.

OneDrive will reset, and you can try syncing again.

Important: You won't lose files or data by resetting  OneDrive on your computer. Resetting OneDrive only disconnects all your sync connections (including personal and work or school). 

*See the upper Link from Microsoft for more Informations.

Hope this information could help you a little with your plans.