Is it fraud to keep receiving this kind of information? Or something.

This kind of information is indeed fraudulent information, which can be directly deleted or ignored or blacklisted.

This kind of information is used to scare you into being cheated.

As long as you haven't done anything wrong, there is no need to really care too much about this junk information.

This kind of junk information is mainly caused by the disclosure of your identity information. Only by strengthening the protection of personal identity information can this kind of information harassment be avoided.