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

https://reidwxzz567.image-perth.org/why-did-google-index-my-parameter-pages-even-though-i-didn-t-link-them

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 URL from its index naturally