This will be controversial, but the point is to pass the written test. You will get a chance to demonstrate understanding and application during the oral testing that comes later. Since the entire question pool is published, the smart thing to do is download an app like Sporty’s Test Buddy. It will generate realistic tests, each one different. Just keep doing this over and over until you’re scoring well into the 80s or 90s.
Some will call this cheating, but FAA tests are known to have many discriminator questions where the correct answer and the decoy answers are pretty close and often intentionally confusing. Things like using degree F instead of C, switching M and T, citing the correct section but the wrong part number (part 135 instead of part 91), that kind of thing. It’s the kind of errors that can trip you up under pressure.
You should know and understand the entirety of the PHAK and FARs, but true understanding often comes only with hours in the cockpit and actual application.
So, that’s my advice. Excuse me while I take cover. I hear incoming…