In fact, it is easier to write an argumentative essay than a narrative, or it is much easier to write a better and more authentic argumentative essay with one's own views than the same narrative.
To write a good senior high school composition, different people will have different methods that suit them. People with good literary skills can easily pick up famous allusions or write sentences that people can't put down. Don't worry if the foundation is not very good. As long as the argument is clear, the argument is substantial, and some rhetoric is used properly, a good article can be written.
There is also the format. Some people think that the format should not be fixed, which will limit literary talent or ideas. But I personally think that as an exam-oriented composition, the format will make the author think clearly and let the reviewers quickly understand the author's central arguments, arguments, literary skills and so on.
A common format: opening sentences (preferably parallelism)-putting forward opinions-positive statements (such as positive proof1~ 2)-counter-negotiable (such as negative proof)-connecting with reality (how to do it)-summarizing the full text (such as refining sentences and writing beautiful antitheses).
In fact, compared with junior high school, there is no difference in the limitation of high school composition, and more words may be needed. Secondly, more skills are needed, such as beginning and ending, paragraph allocation and so on.
In high school, the level will definitely improve, and articles should be grasped, especially the composition in the examination room. Should not be too arbitrary. Externally, it needs beautification. Internally, it needs to be full of classic ideas and beautiful and mature sentences. It's best to have both. If not, you should also learn a beautification skill, which will definitely help improve your composition score.