OneDrive for Mac crashes
Since OneDrive is available on the Mac App Store, it's far preferable to get it from there going forward. Follow the uninstall instructions for the older app and enjoy a much easier update and reinstall process.

https://support.office.com/en-us/article/OneDrive-for-Mac-FAQ-3fc4062c-8051-4392-bff1-551e32840cd0

The uninstall is very easy - just install the latest version, then drag it to trash. The 2019 versions also have a nice reset tool and can show very helpful logs should you not be able to fix things from the FAQ:


  How do I uninstall the OneDrive app?
  Just drag the OneDrive app to the Trash.
  
  How do I reset the OneDrive app?


See the link above for the detailed reset instructions if needed.