Using New Outlook on Windows for personal email, calendar, and contact management
It's just a workaround, but if you close Outlook app and re-open, it sorts them A-Z automatically.
Also, to order them how I want, I have to put letters in front of the folder name ( numbers only work if 0-9, then all the decimals are added first if you have more than 10 folders)
MSFT you should look into this usability feature!!