Using New Outlook on Windows for professional communication and productivity
There is a very simple solution. Unless you have deinstalled Outlook Classic, it will still be there. It mirrors all the messaging of the new Outlook, so you can switch with no issues. To find go to the Start menu and type "Outlook" in the search bar, or go down the list of installed apps and it should appear there as "Outlook Classic". Open it and all the usual functionally remains.
Hope that helps