I only want one feature from Windows Search...
Allow me to disable results from the 'web. That is all I want. Seriously.
For actual, real file-search, I use Agent Ransack which, amazingly, happens to be faster than any version of Windows Search, ever, and doesn't require an always-on indexing service. I only ever use Windows Search for start-menu search (autocomplete, basically) and the fact that the slightest typo sends you to Bing, requiring the tedious launching of Edge which I never otherwise use, is the most annoying thing.
Of course, it seems like there's a 20% chance that you'll end up on Bing even without a typo which is also extremely aggravating.
(Now some "Klugscheißer" is going to reply, telling me that you *can* actually disable web search, rendering this comment false. Please do! Call this a comment-gambit for useful knowledge. Any minute now...)