That sounds like a very discouraging situation. But the grass is definitely *not* greener in primary care! After being in radiology for 30 years, I imagine that you would need some significant retraining to do primary care, and after all that effort, it does not pay well for most people. So many private practices in primary care are going out of business.
You are already highly qualified to practice radiology, so hopefully there is a way that you can expand your job search and be willing to accept jobs that are farther away or that pay less well or that are otherwise not quite as desirable. At least you will be working, keeping up your skills, and paying the bills. It may be exploitation, but it might be better than the alternative!