I'm a freshman in high school, too, and I sympathize with you. I just passed the math exam in the first week, but then I worked hard to remember all kinds of problem books and asked the teacher whenever I had any questions (provided that you thought about it, but really didn't have an idea). Finally, you will come up with a very clear knowledge structure diagram, and don't give up doing these methods. Synchronous Training is published by China Zhigong Publishing House.

Good luck! O(∩_∩)O~