Dear Diana,
Outlook does have many many differencent versions for different customers's use. From you screenshot, the version you are using is not as same as common versions our Microsoft365 customers use.
So, will you please let me know how you get the Outlook, and where did you download it, and how do you open this app to add your account into it? Are you using PWA: Use the web version of Outlook like a desktop app - Microsoft Support? And for the account you are using, is it a Microsoft365 account or personal account (which is ended with outlook.com or hotmail.com) or some other 3rd party pop/imap account?
I need to know some more information about the version first then I can check for you about the downloading issues, thanks for your understanding! In case some private information included, will you please send via private message:
Here are the steps to open private messages:
To view private messaging options> click your profile picture at the top on the right > select the My Profile option. Click View private message.

I look forward to your next update in private message for further analysis. Thank you very much for your cooperation.
Thanks for your precious time. Have a nice day!
Sincerely,
Sherry | Microsoft Community Moderator