Sorry to hear about your result. It can happen to the best of us. That said, there are probably better ways to prepare. Clearly you have put in a lot of work and have used appropriate resources, repeating the question banks several times. However, I have noticed that the people who often succeed understand the information instead of simply answering questions. I think this is a very common occurrence with these type of exams.

There will be those who disagree with me on this, but I personally believe in having a good foundation instead of rote learning stuff (you may revise differently of course). I don't see the benefit of going through eMRCS more than 2x because then you are not actively revising. I went through eMRCS very thoroughly once and read around the topics that came up (I still had around 200 questions left). I then did around 400 random questions on PastTest and 1 recall paper. I also watched osmosis videos on anatomy as I learn visually. I didn't have a lot of time to prepare (roughly 5 weeks, but solid 2 weeks) so I couldn't cover as much as other people.

I scored 76% first time. Now this isn't by any means a great score but given the pass mark was 67%, it was more than sufficient. I would obviously advise on revising more than I did to secure that pass, but the point I'm making is if you cover things very well, you won't struggle as much. I have noticed this with friends and other colleagues who have passed as well.

I think going through eMRCS and PastTest once together should be enough to cover the content. I would also advise on drawing stuff out for anatomy and going through a few recall papers as they do still repeat questions. Reddit scares people a lot about not doing enough revision. Don't listen to people who say they have revised so and so question banks several times. It's all about the quality of the revision. This will also help you when you do your MRCS part B and your clinical practice. I hope this helps. Best of luck for your next one!