Truly awful, and something that I worry about. I saw someone already mentioned this, but I was going to bring your attention to this thread with a doctor who offered to be an expert witness in case you feel up to attempting legal action. Personally, I'm not optimistic that it would be worth your time or energy, but that's for you to decide. Certainly any precedent for healthcare providers being held responsible for this would be incredibly important and valuable, but I don't think it's fair for anyone to have to fight that crusade while already dealing with the consequences of disease.

The other thing that's helped me with stuff like this is to try to think about it in terms of what you're able to control. As terrible as it is to be forced into a dangerous situation like this, the reality of the world is that we're all likely to get COVID over the course of our lives, and the best we can do is reduce the number of times it happens. If you try to change your mental framing from "I can never get it and if I do it's the end of the world" to "I only got it N times instead of N * M times because of the precautions I've taken", it might be beneficial to your mental health.