Hi, I am Dave, I will help you with this.
They have removed many of the options in the new File Explorer app, but there is a new File Explorer app expected to be released soon in an update, which will hopefully bring back some of the missing functionality
The only workaround I know of is as follows:
Open the old Control Panel
In the address bar in the old Control Panel, type Home and press Enter.
That will open File Explorer with the full ribbon from the old version.