Firstly, open your Microsoft Teams app, then go to your Teams channel where you wish to access the files from.
Select the "Files" tab and click on the “Sync” button in the toolbar:
Select the option in the pop-up dialog to “Sync Now”:
Here is an easy and straight-forward method to map your Microsoft Teams channels' "Files" section into File Explorer for easy and direct access to your shared files using the Microsoft OneDrive app.
Firstly, open your Microsoft Teams app, then go to your Teams channel where you wish to access the files from.
Select the "Files" tab and click on the “Sync” button in the toolbar:
Select the option in the pop-up dialog to “Sync Now”: