To remove unwanted pages from Google, add a noindex tag to the page header or...

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

To remove unwanted pages from Google, add a noindex tag to the page header or return a 404/410 status code. These methods tell search engines to drop the content from their index permanently