@jerry I have had this problem many, many times.
For a while someone in the Australian government was sending me personnel disciplinary files. I have reached out to this person and explained her error, but her ability to consistently recall her personal email address remains iffy. :(
There was a young woman in Florida who kept using my email address as a junk email for her various purchases, and one of them had an accurate phone number associated. So I called up and spoke to her mother and explained to her how to set up a secondary email account for junk signups that she still maintained control of. These signups stopped.
There is someone in Ohio who uses my email address, but from having talked to her son[*] I know she has dementia and I just let that one go.
There is a horndog in the UK who uses my email address for Chaturbate and dating sites. For the dating site, I reset the password, changed the account email address to my junk account, and rewrote his dating profile. :)
It turns out there really is a OnlyFans for feet! I know this because someone used my email address to set up a creator account. But before I could reset the password, the account had been banned for ToS violations! What did they do, post pictures of hands?!? 😂
[*] This is ... a story. Her son kept initiating some process to seize control of my Apple Id. One of those emails from Apple support included his phone number, so I called him up, claiming to be Apple support and that we had researched the account and that it definitely wasn't his mother's and that I was closing out the ticket. After some initial huffiness, he told me about his mother's dementia and that he was trying to figure out her online accounts. I spent a few minutes telling him ways he might retrieve that information. At the end, he thanked Apple support for the assistance. :)