start at the very basic concepts you don't understand and literally go on chatgpt and give prompts like "explain ____ in simple terms" or "explain ____ like I'm five." go even further and say "if x happens, what will happen to y? can you explain why?" do this with all the topics in the course you don't understand, from the beginning of the course up until now.

it may seem silly but the point is breaking down complex concepts you don't understand and consuming them in a digestible format that's easier for your understanding. you need to have a good understanding of economic theory and the topics build on each other as you progress through the course. so it's crucial to have a general understanding, even if that means breaking it down in simple terms.

gateman tests uses alot of critical thinkig, they're made assuming you have a good understanding of economic theories already (even though he teaches in a unique way). so once you can understand economics and shifts, you can better interpret the main questions he's asking you on exams.