Please take the time to read/learn how to properly format code. Check out this post, point 11.
The iammeter platform requires a host, this means ip address or hostname. You provided the mac address. If IP address doesn’t work, then you either have the wrong IP address or home assistant isn’t on your network or home assistant can’t see things on your network.
As for the xiamo mijia BLE sensor, that requires your system to have bluetooth. If you don’t have bluetooth it won’t work.
For both of these issues, you should consult the log and look for errors. The log is located in the config directory as home-assistant.log or in the UI under configuration -> logs.