If you have an abusive manager, the best thing you can do is find out if the behavior is illegal, and change jobs. You could hire an attorney to see if any laws

If you have an abusive manager, the best thing you can do is find out if the behavior is illegal, and change jobs. You could hire an attorney to see if any laws were broken, and if they were, likely receive some respite through the legal system. If the behavior was not illegal, there's not much else that you can really do. A few rare companies might have systems in place that rectify the behavior of abusive managers, but that's probably incredibly rare. HR is never there to help you. It's likely best to keep them out of the loop in all these matters.