Not sure if it helps, but I built my configuration from my 2019 MacBook Pro on a 2021 MacBook Pro and 2021 Mac mini (M1 chipset). Both new computers have the same version of Monterey. Outlook search was working on the 2019 MacBook with Monterey. Outlook search works on the mini and not on the 2021 MacBook Pro 14. I have tried everything in the forums and cannot get Outlook search to work on the 2021 MacBook Pro 14.
Seems to me the problem must be with the MacBook Pro 14? When I need to search outlook, I have to use the mini.