Combined with my personal experience in the Olympic Mathematical Contest, I think that if you want to get good results in the math contest, you should first do more questions, but you can't just do them, and you may get stuck. I think you may have done some exercises now, but if you have more basic methods, you often don't know how to choose. When I was in high school, I participated in the National Mathematics League for Senior High School Students. Combined with my experience, I think the first thing you should do is to develop a good habit of doing problems. All questions should be done by yourself, and they should be correct. In fact, in the process of competition, many problems are not that you can't do it, but that you have a bad habit of doing problems and then lose points in the examination room, so for a person who wants to learn the competition, the first thing is to do all the problems correctly. Secondly, if your goal is high, I think you should do some classic questions and master the methods from the League of Nations questions and simulation questions. Plane geometry, I think you must have the consciousness of doing it independently. Geometry problem is not about quantity, but that you have to do a problem that you think is difficult in a week. You will find yourself making progress quickly without looking at the answer. Finally, in view of what you said about algebra, I think you can look at some topics of quadratic equations in high school. In fact, from the perspective of competition, there is not much difference between high school and junior high school. Studying high school mathematics and competitions on the basis of studying existing subjects after school can broaden our horizons and pave the way for our future high school mathematics competitions. Finally, I hope you succeed in the exam.