Hi adiryapunter,
I see that you have been preparing for the GMAT for some time but have been unable to improve your verbal score. You should consider making some changes to your study routine as well as giving yourself more time, so you can ensure that you have mastered GMAT verbal prior to taking your next GMAT.
When devising a new study routine, you are going to want to use a resource that allows you to FIRST learn the concepts and strategies related to SC, CR, and RC, and then you will need to put in a lot of dedicated practice to test yourself on the areas you have reviewed. For example, let’s say you start by learning about Critical Reasoning. Your first goal is to fully master the individual CR topics: strengthening, weakening, resolve the paradox, etc. As you learn each CR problem type, do focused practice so you can track your knowledge in the topic. If, for example, you get a weakening question wrong, ask yourself why. Did you make a careless mistake? Did you not recognize the specific CR question type? Were you doing too much analysis in your head? Did you skip over a keyword in an answer choice? You must thoroughly analyze your mistakes and seek to turn weaknesses into strengths by focusing on the question types you dread seeing and the questions you take a long time to answer correctly. You will want to follow this process for all verbal topics.
Each time you strengthen your understanding of a topic and your skill in answering questions of a particular type, you increase your odds of hitting your score goal. You know that there are types of questions that you are happy to see and types that you would rather not see, and questions that you take a long time to answer correctly. Learn to more effectively answer the types of questions that you would rather not see, and make them into your favorite types. Learn to efficiently answer questions that you currently take five minutes to answer. By finding, say, a dozen weaker quant areas and turning them into strong areas, you will make great progress toward hitting your verbal score goal. If a dozen areas turn out not to be enough, strengthen some more areas.
When you do dozens of the same type of question one after the other, you learn just what it takes to get questions of that type correct consistently. If you aren't getting close to 90 percent of questions of a certain type correct, go back and seek to better understand how that type of question works, and then do more questions of that type until you get to at least around 90 percent accuracy in your training. If you get 100 percent of some sets correct, even better.
So, work on accuracy and generally finding correct answers, work on specific weaker areas one by one to make them strong areas, and when you take a practice GMAT or the real thing, take all the time per question available to do your absolute best to get right answers consistently. The GMAT is essentially a game of seeing how many right answers you can get in the time allotted. Approach the test with that conception in mind, and focus intently on the question in front of you with one goal in mind: getting a CORRECT answer.
Finally, you may find it helpful to read my article for more information regarding
how to score a 700+ on the GMAT.
Feel free to reach out with any further questions.
Good luck!