I think there is a way to do math problems. There are several kinds of problems, and the others are similar. You can conquer one type at a time. If you don't understand, ask other students first. If all types of questions are solved, the basic exam will be fine. It doesn't matter if you fail in the exam, because basically every question type is one, so as long as you make sure that everything you know is correct, you can get high marks.
When you can't solve the problem, just put it aside and relax, because you always want to drill a dead end at will and see it later. Maybe you will change your mind and become simpler.