Why is OneDrive stuck looking for changes or updating?

Here are a few options to help fix this problem.

Pause OneDrive and Restart Syncronbisation.

Refer to https://www.windowscentral.com/how-quickly-pause-and-resume-onedrive-file-syncing-windows-10

Clear the Cache in your computer.

Refer to https://support.microsoft.com/en-us/office/reset-onedrive-34701e00-bf7b-42db-b960-84905399050c

Logout of OneDrive and Login again

Refer to https://www.intowindows.com/how-to-sign-out-of-onedrive-in-windows-10/

Restart your Computer