Hi mariav1202.
I'd like to see your TTP analytics page to get a clearer sense of what's going on, but it appears that you have done a pretty good analysis of why you didn't score higher on verbal, and the main issue appears to be that you haven't yet learned to execute well when answering verbal questions. Basically, you need a lot more practice.
As you surmised, you did need to focus on learning the fundamentals, but at the same time, learning the fundamentals isn't sufficient for achieving an upper 30s verbal score goal. So, learning the fundamentals is just the beginning of what you need to do to master GMAT verbal.
Here's a key thing about GMAT verbal. It's different from GMAT quant, in that, when you learn a quant concept or strategy, you quant performance often improves right away, but in verbal, learning a new concept is often just the beginning of the process, and you need a lot of practice applying the concept to see improvement.
That practice has to start out untimed, and get this. To score in the upper 30s in verbal, you need to get 75 percent or more of medium and hard questions correct. So, when you're doing untimed practice, you need to get close to 100 percent of easy questions correct, 80 to 90 percent of medium questions correct, and even close to 80 percent of hard questions correct. Furthermore, you have to get so good when doing untimed practice that, when you speed up, you continue to get 75 to 80 percent of medium and hard questions and basically all easy questions correct.
Also, you have to be super clear regarding why each choice is correct or incorrect. In other words, if you get 80 percent of the questions in a set correct but fully understood why you got them correct in only half the cases, that performance indicates that anything can happen on test day, because your guesses or hunches may not work out.
You can see from the difference between what I just described and your accuracy rates. In fact, since many OG verbal questions are relatively easy, getting 70 percent of OG questions correct means that you're getting under 70 percent of medium and hard questions correct. In quant, getting 70 percent of questions correct can mean that you're ready to score in the 40s, but in verbal, getting 70 percent of practice questions correct means that you could score in the 20s or low 30s on test day.
So, the upshot is that you weren't ready to score in the upper 30s on verbal when you took the test. You have to practice a lot more, and achieve much higher accuracy when practicing.
You may also have to review fundamentals as your practice reveals any knowledge gaps you have.
So, to achieve your verbal score goal, continue practicing untimed by carefully analyzing questions choice by choice and achieve the accuracy rates I outlined above. Even better would be to shoot for streaks of 15 or more verbal questions correct in a row. If you can get 15 easy, 15 medium, and 10 hard questions of a category correct in a row, then you are performing at the level you need to perform at to score in the upper 30s or low 40s in verbal. After all, you may be able to semi-guess your way to getting 70 percent of questions correct, but if you get 15 correct in a row, then you have things under control. As you come upon knowledge gaps when practicing, go back and review the relevant concepts. Then, once you're achieving that kind of accuracy, seek to speed up to test pace while maintaining that level of accuracy. Once you're getting around 75 to 80 percent of medium and hard verbal questions correct at test pace, you're ready to score in the upper 30s on test day.
For even more detail on all of this, you could read the following posts.
How to Score High on GMAT VerbalThree Key Practice Tips for Mastering GMAT VerbalAlso, please feel free to reach out to the TTP team to discuss your verbal performance analytics.