First of all, you don't have to be very anxious. The second volume of physics in grade eight mainly focuses on electricity. Now you have only learned part of it. I think it may get better after I finish studying, but it may also become more and more chaotic. This requires you to find more questions after class, that is, the parts you have learned, do more research and look at the answers. It is best to buy ideas to solve problems. This is also based on your mastery of some concepts and basic principles. The most important thing is to listen carefully in class. You can take notes even if you don't understand. If you don't understand anything, you can take more notes and figure it out when you get home. This kind of thing didn't come in a hurry. Look up more problems online, so that someone will help you solve them, and you can also sign up for extra-curricular classes and make up lessons. If you have any questions in your homework, you can take time to ask your teachers and classmates. As soon as you communicate, you may begin to understand!

Practice mathematical factorization more, be careful, do it slowly, step by step, and the correct rate will be improved. You can also type some questions, and I'll analyze them for you!

Focus on persistence, you must believe in yourself! Practice more and find ways! Study hard and ask more questions!