I understand completely. The boot camps are hit or miss. It's lot of information to memorize over a couple days when the PMP exam itself is not about memorization. So from the start, the forces are against you for the PMP. That's not to say that boot camps don't work - but they are hit or miss.
I still think that free advice can be dangerous advice. I would talk to someone that does this professionally - teaching people how to pass this exam. It may well mean that they you need a lot of work but the chances are you have a lot of knowledge and now you just need to know how to sort it out and make sense of it.
At the same time, the longer you go from the exam the more vulnerable you become to forgetting all that you have memorized and will in turn just stretch it out and turn the PMP voyage into a long dismal path that leads to nothing but frustration. It really doesn't have to be that hard.
You you need a handful of things to pass the PMP exam:
1) Drive - have to want it. And good thing for you it seems like you got that
2)An open schedule - it takes time to pass the exam. No matter what way you cut it, it's time consuming. It just doesn't have to insanely time consuming.
3)The right tools. Very difficult to screw in a screw with a hammer. Very difficult to pass the exam without using great test questions, and solid notes.
4) Good advice. Since most people don't take 4 hour exams regularly I would tap a resource (coach) that can tell you how to use the tools, what tools you should use and come up with a schedule to fit into your time because this is what they do.
With that said where do you start? Take a breath, you failed it happens to a lot of people with the PMP exam. Next off, I would recheck your schedule make sure you can commit to it and hopefully you have because you're almost there.
Finally, I would then contact a coach and they can evaluate if you even need their help and how much help you might need if you do need help and make the best recommendations to you. It's worth a phone call/e-mail.
Anything past that, "Use this book", "Do this", could very well be subjective based off what worked for that person. I would go to someone that has helped many people in your same spot.
All of that take it with a grain of salt and good luck with what ever move you decide to do. Let me know if you have any questions.