Cleaning up old search results depends entirely on who controls the site. If...

https://www.a1bookmarks.win/if-you-need-to-scrub-outdated-info-from-google-the-first-step-is-checking-if

Cleaning up old search results depends entirely on who controls the site. If you own the page, delete it or return a 404 error, then use the "Removals" tool in Search Console for a quick fix