Cleaning up outdated Google search results comes down to one question: do you...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Cleaning up outdated Google search results comes down to one question: do you control the site?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 the page and ensure it returns a proper 404 error—don’t leave it as a "soft 404" where Google still sees a live page