I find surgery under the NHS in the UK is excellent, I've had six operations. Good aftercare and generally compassionate nursing. For anything else I have found the NHS poor.
I was subjected to two biopsies after a routine breast scan didn't look quite right. After waiting over a terrible Christmas holiday for the results, they told me everything was fine and it was probably moving to digital scanning machines that had given a false scan result! Try telling that to my teenage daughter who thought she was going to lose her mum after losing her dad!
Mental health care is appalling. I know someone who was sectioned, put in a psychiatric ward for several weeks and basically was just fed and given somewhere to sleep. As if they were an animal. No occupational or talking therapy, only seeing their psychiatrist once a week, no treatment at all beyond anti-anxiety meds. Plus they are now on a list whereby they get called into see their doctor for a mental health check every year even though they have been better for years and they can never be taken off this list, it's the law. Like they are a sex offender!