Hi abdulalshelian,
Most GMATers find the Exam to be challenging in at least one way (the Quant, the Verbal or both), so you're not alone. Regardless of what you've experienced during your studies so far, the GMAT is the same consistent, predictable Exam that it's always been, so you CAN train to score at a higher level.
From what you described, it sounds as though you put in a LOT of study hours. Going forward, you have to be careful about confusing "quantity" of study with "quality" of study. I've never asked anyone to study 30+ hours a week - and while it's great that you might have the available time to study that much, with that number of study hours, you would run the risk of 'burning out' before Test Day (and that is something that we want to avoid). If you are going to try to study that much, then I suggest that you take one hour "off" for every two hours of study. For example, you could study for 2 hours, then stop for an hour, then study for another 2 hours, then take an hour off, etc.
Before I can offer you the specific advice that you’re looking for, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) What type of study routine have you been following so far? How many hours do you typically study each week?
2) On what dates (or approximate dates) did you take EACH of your CATs/mocks and how did you score on EACH (including the Quant and Verbal Scaled Scores for EACH)?
Goals:
3) What is your overall goal score?
4) When are you planning to apply to Business School and what Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich