I want to share privately, however, my UI screen does not show any where to click on a file menu. It just lists at the top DECKS ADD SEARCH
Can you share a screenshot of your Anki?
That’s AnkiWeb. That client is used to share decks publicly via the “Actions” menu.
To share a deck privately, download/open the Anki Desktop application, click the cogwheel icon next to the deck name and select “Export”.
(If you have never used Anki Desktop before, you’ll have to click “Sync” and then log in with your AnkiWeb credentials to download your collection.)