It sounds like what you need to do is take some time to think about your future plans. Right now, things may seem awful, but they won't improve unless you make a plan and do something about it!
The first thing to consider is why you wanted to do Medicine. You say you had ambitions of neurosurgery - why? What was it that drew you towards that career?
Once you know that, you can consider what to do next. If you feel that Medicine is still 'the only option' for you, then plan to take a gap year. Work extremely hard this year and resit some exams so that you end up with at least AAAb at the end. From there, you can apply during your gap year, and get some more work experience so that you're a competitive applicant. You will also have to do your UKCAT again and can use this year's experience to get 650+.
On the other hand, if you think that other degrees - e.g. Neuroscience or Biomedicine - would still hold some interest to you, you can think about applying for them. If you plan resits and can get predicted AAB, you will probably get Biomedical offers from some universities. You may discover that you really enjoy that course, or you can look at going for Graduate Entry Medicine after. You said previously that that didn't interest you, but I'm afraid it may become your only option.
Finally, you may decide to give up on Medicine and seek something completely different. Some people want to go into Medicine for the wrong reasons - the money, the prestige, pressure from parents or school. I'm not saying that's necessarily why you want to, but if you have any doubts about Medicine, it may be easier and better for you to study something else. There are many fantastic careers out there, and not getting into your first choice is not the end of the world.
Good luck!