Thanks for sharing your ESR.
Your Critical Reasoning sits at the 70th percentile and your Reading Comprehension at the 53rd, so RC is where the larger opportunity is and should get the bulk of your attention.
The more useful signal is in the fundamental-skills breakdown. Almost everything there lands between the 58th and 73rd percentile, with one clear outlier: Identify Stated Idea at the 38th, against Identify Inferred Idea at the 69th. You are doing better at drawing inferences than at pinning down what the passage explicitly says. That usually means you are reading for general impression and reasoning outward from it, rather than anchoring your answers to the precise wording of the text. Detail questions punish exactly that, because the right answer hinges on what the passage actually said. One caveat: these sub-scores come from a limited number of questions, so treat them as a starting hypothesis and confirm the pattern against the RC questions you have actually missed.
Here is how I would rebuild RC. Read the whole passage first, before any question, for understanding and structure rather than detail: the main point, why each paragraph is there, and how the ideas relate. Then, on every question, go back to the passage and confirm your answer against the text instead of answering from memory. Identify the question type before you evaluate choices, since detail and inference questions are answered differently. And do not match words, because trap answers often repeat the passage's exact phrasing while distorting its meaning.
Given your weak spot, add one habit: on any question asking what the passage states, relocate the supporting line before committing. That targets the 38th-percentile skill directly.
For practice, work one question type at a time, untimed, until accuracy is consistently high. For every miss, categorize the cause: a question type you did not recognize, a misread, a careless error, or a trap. Redo missed questions from scratch a few days later to confirm the fix held. Only then layer in timing, and only after that mix RC and CR into full sets.
CR at the 70th is your stronger area, but depending on your target Verbal score it may still have room, so keep it in your rotation while RC gets the larger share.
On materials, work from one clear, comprehensive, structured resource that teaches each question type in isolation, in sequence, and lets you track accuracy by type. Piling up separate sources tends to reinforce the same habits. For practice questions, official GMAC questions from the Official Guide and mba.com are the most realistic. Active reading of publications like The Economist and Scientific American also helps, though it does not replace real RC questions.
Make RC your priority, rebuild the process above, and drill by type untimed with honest error analysis. Add timing once accuracy is there, then move to mixed sets.
This article walks through the RC approach in detail:
GMAT Reading Comprehension Tips: Top 8 DOs and DON'Tsananya88888888888
Hey, this is my ESR, can someone please guide how to improve my performance and what materials to refer.