Hi Nikonnn,
Brent's point is incredibly important here. I think it matters less what materials you use (of course I'm biased towards Manhattan Prep's, which are excellent, but any reputable company will have high-value content). It's much more important
how you approach your studies.
Here are very important guidelines:
1.
Track your mistakes! There is no such thing as a "small mistake." A wrong answer is a wrong answer! You want to be systematic about locating patterns in your mistakes, and working to fix them. More here:
https://www.manhattanprep.com/gmat/blog ... -studying/
2.
Fix your timing. You need to practice by timing yourself on individual problems, then on larger problem sets, then on practice tests. If you run out of time on the test, you'll never be able to achieve a tip score. More here:
https://www.manhattanprep.com/gmat/blog ... illing-me/
You can use Mprep's GMAT Navigator to time yourself on individual problems:
https://www.manhattanprep.com/gmat/stor ... navigator/
Another resource you might want to consider: Manhattan Prep's
GMAT Interact.
Unlike other programs that have static videos, this program is fully interactive: you answers questions in the platform, and it gives you personalized feedback. Our program focuses and strategies and approaches, as you mentioned, not simply content. More info here:
https://www.manhattanprep.com/gmat/prep/on-demand/
Let me know if you have any questions.
Good luck with your studies!