Clearing old Google results boils down to one question: do you control the...

https://dibz.me/blog/whats-the-safest-way-to-remove-a-page-without-causing-a-bigger-seo-mess-1073

Clearing old Google results boils down to one question: do you control the site? If it’s your site, delete the page and ensure it returns a proper 404 error; don't leave it as a soft 404 or Google will keep it indexed