Cleaning up outdated Google results depends entirely on one thing: whether you...

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

Cleaning up outdated Google results depends entirely on one thing: whether you control the website. If you own the site, delete the content and ensure it returns a proper 404 status—avoid "soft" 404s, which confuse Google