Sorry, just reread your post. If you cleaned everything, than it might be some internet account like your mail, from which any password could be reset. Check sensitive accounts, close all sessions, set up 2fa

Did you clear your browser cache? Maybe it’s hacked like this?
https://youtu.be/3ogyS4KOlXc?si=X9BlylD3uz-QRgPe

What about your home router? Check logs, do factory reset, change password, forbid access to router settings from the internet.