In fact, the main reason is that the number of questions is not enough, the degree of mastery of the questions is unknown, and there is no reasonable test center to see the questions.

Now, when you do the questions, you can properly train yourself to understand the test sites, put similar questions together, and even do them yourself when you have time. In the second and third year of high school, the number of questions will increase and can be reduced.

You can be moderately nervous in the examination room, but not too nervous.

Time allocation is very important. Usually you can set time to do your homework and do exercises for training.

I hope you can overcome your own problems one day and reach a new height in your grades.