You are correct. In my jurisdiction (the US), judges have complete, 100% immunity for actions they take in their capacity as a judge. Deciding wrongly is NOT so

You are correct. In my jurisdiction (the US), judges have complete, 100% immunity for actions they take in their capacity as a judge. Deciding wrongly is NOT something a judge can be prosecuted for. There are a lot of reasons why this is a good thing and in egregious cases there is usually a different reason that can be found. (Like the judge in my state convicted of sending kids to private jails just in order to receive kickbacks. He could NOT be prosecuted for the decisions he made. But he was successfully prosecuted for accepting bribes and kickbacks.)