Hi orlando,
If right-clicking on the Documents folder and clicking "Pin to Quick access" does not work, please try resetting the Quick access database as mentioned in the following thread:
https://answers.microsoft.com/en-us/windows/forum/windows_11-files/cant-pin-videos-folder-to-quick-access-anymore/387594c4-f609-477a-925d-e2afdbcde687?messageId=70ddb998-7627-404a-b4a8-a8c6ff2d8958 (see the accepted answer.)
