How to add one drive to Finder

To get OneDrive in Finder, just download the OneDrive app from the App Store, sign in, and follow the setup to pick your sync location. It should show up automatically in Finder’s sidebar—if not, check Finder settings under ""Sidebar"" and make sure OneDrive is ticked. If you want something more flexible, Commander One can also help you manage OneDrive and other cloud drives right from Finder. 

Cause, there are cases when OneDrive on Mac runs into synchronization issues, frequent disconnections, and files don't show up in the Finder as expected. So It's a more stable and efficient way to manage OneDrive on Mac:

[Edited by Moderator]

IF you already have OneDrive installed but want it to show it in the Finder Sidebar, this Apple article tells how:

Customize the Finder sidebar on Mac - Apple Support

Hello,

Below I provided a link to download the OneDrive app from the Mac App Store. I don't use it but based on the preview videos it will (or can be) integrated into Finder.

Microsoft One Drive in the Mac App Store

I found some more in depth info on the Microsoft Support site but I am not sure if this is related to the app from the App Store. I guess this article would be a next step if the One Drive app doesn't automatically integrate to Finder for you.

(3rd Party Link) Microsoft Support - Sync files with OneDrive on macOS

I hope this helps.