So the most important thing is to look at your own efforts. As mentioned above, because there is not much content, as long as you follow the teacher in class, there is no problem in passing.
Second, it depends on your teacher. If he is the kind of teacher we usually call "the devil's coach" and never makes mistakes in tests and exams. .................................................................................................................................
One more thing, if you are born extremely bad at sports. .................................................................................................................................................................
If you know a senior who has studied tennis, you might as well ask, after all, personal experience is more accurate.