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

https://www.bookmark-suggest.win/if-you-need-to-hide-pages-from-search-results-start-by-adding-a-noindex-meta

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