If you don't achieve your goal, think about how to achieve it. Don't dwell on the methods taught by others, follow your own feelings.
My method is: for example, I made a mistake in a topic. After the teacher explains, I can do it by myself without looking at the answer, and that's all. Note that as long as you can do it, you don't have to do it again. If I encounter another topic next time, which is similar to this one, I can also work it out, which shows that my learning efficiency is super high. If I can't do it, but I can recall doing similar problems before, but I just forget how to do it, it means I have a good memory. If I find the previous questions, this kind of questions will be basically no problem in the future.
English is a thing that practice makes perfect. The so-called reading a hundred times is self-evident, which is aimed at liberal arts courses. Understanding is the most important thing in science. Liberal arts is the most familiar. You can read the text and recite it again and again, and learn new things by reviewing the old ones.
There is no fixed method for learning. As long as the goal is determined, it will form its own method.