Version 2004 (build 12730.20270) - how to roll back to the previous version?

Question

Outlook

Office 365, home, legal.
MS Outlook updated itself to the version specified in the subject.
At the same time, the search function from the column with the list of messages disappeared.
Instead, there was a search line "Search for people" with a set of filters, which made the search extremely inconvenient.

The question is how it is possible to return only MS Outlook itself to the previous version without affecting the updates of other programs from the MS Outlook package.
Thank you!