Hi Manal,
I too failed the first time I took the exam and could not figure out where I had gone wrong. I noticed that reading and re-reading wasn't doing enough for me. Concentrating the questions under the stress of a practice timer helped me. Taking the 9 practice exams multiple times and going over every single answer whether I got it right or wrong helped me improve. Also, I made a grid of each exam and each time I took it to see where I still had areas where the score was less than passing. There was a point where that was every area! But I kept going and got better. It did take time and it was time well spent.
Please don't give up. You can do this! I look forward to hearing you report back that you passed!
Best Regards,
Gail