In Yanarym's case, she only knew one person from a subjective perspective. She could never advance in anything in that knowledge. She could picture herself dying repeatedly and failing this world miserably from being ignorant.
That modest kind of information would work wisely if she were the main character of this world.
She was not.
She was an invader, a transmigrator. She was a foreign person to this world.
In addition, the Original was merely one of the catalysts that must die for the real protagonist to have his character developed.
She needed to know whom she had to deal with, and it was hard to analyze without knowing them in person and relying on the plotline and memories that were subjective.
She must know and understand every character and variable. She had to look at this world impartially to become the King of Kings.