New Outlook for Mac does not show emails older than 30 days

It seems whatever version I choose, there is drawbacks.

In Classic Outlook for Mac the search feature is severely broken. (Also, I was recent.y forced to "upgrade"... Although, the downgrade button is now still there.)

In New Outlook for Mac Search seems to work fine, but there is the issue with the folders not showing all mails. And it's not just about 30 days either. My Archive folder goes back for three months, the Sent folder refuse to download anything, even there is mails in there newer than 30 days. This is, after setting up the accounts NOT using the Microsoft Cloud sync feature.

I had previously set it up using the Microsoft Cloud sync, then the downloading of mails seemed fine. it would quickly download all mails from any folder (I think, I only had this set up briefly, because there are drawbacks...). The Microsoft Cloud syncing however does not allow to change the "Full Name", so your recipients will always see the email address rather than your name and, worse still, you cannot move mails from one IMAP account to another (which is possible when NOT using the Microsoft Cloud sync feature).

It's getting a bit frustrating, having to chose which feature I want to work...

Has Microsoft found a solution for this?

It is professionally crippling to be unable to search back through emails older than one month (my mailboxes all contain a random scattering of emails before this, but nothing of any value). What is Microsoft thinking? It might look nice and work better than it used to but, functionally, Outlook has degenerated into dumbed-down, stunted program that is less powerful than Apple Mail—which comes free with every Mac.

There is so much else wrong with it too (don't get me started on the way it sends calendar invitations straight into the trash as soon as they've been accepted—when they are addressed to an IMAP email it risks disappearing with nothing in either your calendar or your inbox. Doh!).

Seriously disappointed Microsoft. You charge Mac users for the privilege having an easier interface with PCs at the cost of making the Mac experience poorer—that's a pretty poor strategy if you want a sustainable business in the growing world of Mac users.

Yes, It's true. Only 30 days email are downloaded and the support team said that "It's by design". Is MS joking!

'Yes, It's true. Only 30 days email are downloaded'

Not so, I've got some over three years old downloaded and displayed and some over two years old and also displayed.

Wow, Can you please guide me? It will help me.