If you need to hide pages from search results, use the right tool for the job....

https://wiki-mixer.win/index.php/Why_Does_Google_Take_So_Long_to_Drop_a_Noindexed_Page%3F

If you need to hide pages from search results, use the right tool for the job. Add a "noindex" tag to the page header to tell Google to drop it from their index. For urgent removals, use the Search Console Removals tool