I have posts on a lot of sites. Is there is a software that removes this or masks it? Eg search somebodys name

Question

Example use a search engine and search for somebody's name. You will see lot of things about the person. What if you want to erasae it......

Answer 1

On all sites that permit editing, edit your posts and remove the text.

Ask site operators if they remove your content.

Other than that, there's not much you can do.  Even when removing content, there are sites that basically archive the internet.  I have a page I made in the 90's that is archived on the Internet Archive site.

Good luck.  Oh ya, there's also companies that specialize in this work.  Pretty expensive.