With all these kinds of CTFs, the chances of being able to do the next level after you read a writeup are rather small. It's better just to come back to it when you have more skills.
(Might be worth stating if in fact you've finished the CTF challenge; otherwise, what makes you sure this is the case?)
Spend enough time learning the instruction set and the concepts involved and the answers will become apparent.
Honestly really isn't for myself, but based on experience teaching a wide variety of people, that some people learn different ways and are more willing to take something new on if they feel they won't break "it" (which is what the website does) and feel there's a built-in for getting to done. Most users get that connect the dots isn't the same as DIY, but still a option that helps some users that would have never tried, but were interested in the topic. Thanks for commenting.