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

https://blast-wiki.win/index.php/Good_Signs_a_Deindexing_Specialist_Actually_Knows_What_They%E2%80%99re_Doing

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 page active for visitors