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

https://alexisqoem867.trexgame.net/should-i-block-a-page-behind-a-login-to-remove-it-from-google

If you need to hide pages from search results, start by adding a "noindex" tag to the page code. This tells Google to drop the URL from its index. For immediate results, use the Removals tool in Google Search Console to hide content temporarily