The new outlook - not the quality i expect

Sorry, but just getting black Outlook Window instead of mailboxes with folders and mails is not something I accept. Sorry, where is the reliability of a "normal" Windows application?
This is simply not acceptable.
The black Window is the Outlook window. 👎🤪
I could tweak somehow that I see the setting dialog.
So to work again. I have to restart Outlook.
Better to stick with the old Outlook?