Is it possible to block certain pages, so that they don’t show up in search results? I want to manage pages so that they show in the page hierarchies, but can’t be found when searching.
No, this function is not available.
The concept of unlisted pages, like with Youtube Videos, doesn’t exist in Confluence.
Although even on YouTube hidden pages wouldn’t show in any lists or hierarchy displays. Conceptionally this would be contradictory, in my opinion.