Refine search past the organization level

It is completely bonkers that search results can’t be refined further than “your entire organization.” Our organization has hundreds of teams, tens of thousands of files. I need to search inside teams, and inside projects. Ideally I need to search inside subfolders that live in those projects - it will always be so strange that we can’t make subfolders - but I don’t want to ask for too much at once. 🙂