Don't give yourself too much pressure at this time, or too much pressure will lead to mental problems. At this time, you should comfort yourself, relax first, and then start looking for questions that you can't understand. It's best to hire a good tutor or go to a cram school and concentrate on class. Don't ask questions from teachers at school, ask questions from tutors, and be sure to make it clear. At this time, don't add pressure to yourself. I'm only a freshman, and I still have time to work hard. Don't give up because you feel hopeless. You will be at a loss for the next two years. I wish you can get better and better!