Sync with my Documents, Download, etc like onedrive

How I can configure to set to sync folders in Users (like My Documents, My Downloads, etc) like in One Drive ?

You can set up more than one sync and point them to different folders. For example uncheck Nextcloud’s Documents folder on the original sync, then set up a second sync to go from the computer’s My Documents to Nextcloud’s Documents folder.

https://docs.nextcloud.com/desktop/latest/navigating.html#configuring-nextcloud-account-settings