Microsoft Teams gives you the ability to sync your files to File Explorer. A lot of people don't realize this feature exits. Let's see how to do this.
Instead of going to Teams | Files to upload or find a file, you can:
Now you can manage your files just as a normal document in your machine.
Warning: If you don't want to be part of that Team anymore, don't delete the folder in File Explorer - This will sync with Teams and remove the files there too. You should go to OneDrive | Settings | Stop Sync.