I have to use Teams, Outlook, and Sharepoint for work.
What kills me about the search functions in all of them is how bad it is. I work for an ISP, and we use identifiers for different services. I can search SharePoint for the unique numerical identifier of a circuit and get multiple results returned.
Granted, the first is usually what I'm looking for, but none of the other returned results have the identifier anywhere in them.
Same for Outlook. So much junk noise returned when searching for anything.