Well, the key is to master a solid foundation, then do more problems and master learning skills and methods. Don't copy the answers when you get good grades. After completing the process, check the answers. If not, just look at the analysis, see what you did wrong, and then practice accordingly. I was not good at math before. My mother applied for the Olympics, inadvertently solved a math problem, and she became interested. Now my math is my strong point. Believe in yourself, and you can do it.