How to do a digital clean out? Stalker, help appreciated.

I have a stalker that has been harassing me for over a year. Firstly, i know removing my data is not completely possible, but i want to start reducing all sources of “me” on the web, including random accounts, photos where possible, search results etc. As much as is currently possible to do to a reasonable extent. Unfortunately, I did grow up an online kid and have a lot of accounts and info.

He is currently contacting me through email …

accounts data digital etc photos privacy random results search stalker start the web web