Make Yourself Expensive: A Field Guide to Shrinking Your Data Footprint
(theramm.transparencycascade.org)
Found this link for the data removal services page. The only "free" option it lists is a Google tool that requires log-in.
Edit: though if you live in the EU this isnt required, since here, not just any company can take your personal data and publish it online. You can test it yourself by googling
"firstname lastname" city, country
If you dont find any pages that lists your info, this process isnt necessary for you