Cleaning up old Google search results is straightforward once you know where to...

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

Cleaning up old Google search results is straightforward once you know where to look. The deciding factor is whether you control the site. If you own it, remove the page and let Google’s crawler see a 404 or 410 error