First, delete all the content you published and social network accounts like I did. Change the name first of those accounts to be sure that if they wont totally delete your account, it will not be your name in the system. In the case of some websites you may be able to convince the owners to delete the content you posted. Some other websites, might not be easily convinced, but you can bait them with money to achieve your goal.

I did all that. Currently the only place my full name shows on the internet in on Companies House, because they keep those records, for almost 20 years after you close a company. And those same records get published by third parties also. Other than that, I'm GHOSTING.