I'll teach you some ways to learn math! Learning math well in high school is king.
1 Preview what the teacher is going to say before class, and make a mark if you don't understand!
2. Concentrate on what you don't understand in class, take notes where you don't understand, and write down the teacher's ideas.
Look at the notes you just made after class and see for yourself what you don't understand when you preview.
See if you can finish the homework assigned by the teacher independently. If you can, it means that you have basically mastered this lesson. If you can't do it, you should try to understand every question.
If you don't understand anything, you can continue to ask and hope to adopt it!