If you need to hide pages from search results, start by adding a "noindex" tag...

https://wiki-dale.win/index.php/How_Do_I_Remove_a_Page_That_Should_Never_Exist_Again%3F

If you need to hide pages from search results, start by adding a "noindex" tag to the page header. This tells Google to drop the content from its index while keeping the URL active for visitors