Hiding iCloud folders from search on iOS

I have a few files that come up frequently in my searches from the iOS equivalent of spotlight (idk what this is called just swiping down on the home screen) that I dont want previewed in search. I am trying to figure out how to hide them from search or prevent their previews (images) from showing up.

I have tried setting the containing folder to .noindex but that didn't seem to work.

Any ideas?

You cannot isolate one folder to be hidden from iOS spotlight, as per my knowledge.

To fully remove Files app from showing files in spotlight, Settings → Siri and Search → Files, turn it off.