Cleaning up outdated Google search results comes down to one question: do you...

https://reportz.io/technology/how-do-i-keep-dead-urls-from-creating-a-bad-user-experience-in-search/

Cleaning up outdated Google search results comes down to one question: do you control the site? If you own it, delete or 404 the page and let Google re-crawl. If you don't control the site, use the "Refresh Outdated Content" tool to force an update