Hey there Marc_Has_A,
We understand you've been receiving emails about your Apple ID password being reset. This persists even after changing your password from your phone and having two-factor authentication. We'll be happy to help.
First, we'd recommend double-checking that these are authentic emails from Apple. Reference this page: Recognize and avoid phishing messages, phony support calls, and other scams
Afterwards, take a few moments to go through the steps here: If you think your Apple ID has been compromised
This will guide you through a few more things you can do to help secure your account.
If you still have concerns afterwards, it would be best to reach out to Apple Support directly. Use this link: Get Support
Cheers!