Using New Outlook on Windows for personal email, calendar, and contact management
If you go on youtube, search up Timbo Tube Outlook Guide, there you will find my short and simply guide that gets you back to the old Mail/calendar app. It is not the Outlook app from Office, just to clarify. It is for the basic Mail/calendar app that most people use day to day.
If this is what you seek, my video is just over 3 minutes long and only a few simple steps. It will save you tons of time and headaches.
I hope it helps, and that this message finds you. My channel is very small, and I do not put any effort into promoting it, so I would much appreciate your support in the form of a subscription, if it does help you. No obligations, and I hope it helps you, regardless.
I'm not sure if you were originally using the actual outlook program from Office, because most basic users are under the impression that the old Mail program was Outlook, but it was not. If you go back to this old mail program, you can link any of your emails, and it should even have your old data. I can't guarantee it, but I think it will.