Getting bullied at work by a manager

As the title says- it's not nice. I am miserable every day going in, but actually have friends at work and like the people that I work with. This one manager is ruining my mental health and I seriously want to leave.

I have already flagged it with senior management. There have been no changes. If anything, it's worse now.

Is this something that happens in every workplace? I don't want to leave and just have the same thing happen.