If something wrong happens and the lawyer is officially responsible, the onus is still on you to make your claim, likely in court.

I'm dealing with a similar issue where an expert is indeed wrong and indeed responsible for his mistake, but the wronged party needs to spend a lot of money proving that they got wrong advice in front of the courts. The wronged party does not speak the local language (as is common in Europe), so that's unlikely to happen.

There's a huge gap between being technically right, and seeing justice.