How can so many radiologists miss so much?

I had an MRI today of my spine that came back as totally fine, yet I know I've had for years and years 3 degenerative discs on every other scan.

A few months ago they noted "no evidence of a prolactinoma" despite everyone already knowing it's there and seeing it clear as day.

Last year a radiologist explicitly noted I did not have a torn labrum or hip dysplasia despite 5 surgeons who read this as yes, yes I definitely do.

Two years ago "no evidence of gallstones" yet the surgeon who read it said I did, and I saw photos of them when he took it out.

A radiologist even missed a clearly broken ankle 10 years ago.

What is going on??? These have all been different radiologists and mostly different hospital systems.