Then you can't just be a teacher in a cram school. If you want to organize a remedial class by yourself, you will change from a practitioner to an organizer. In this case, the remedial classes still have some prospects. Otherwise, you are just a teacher in a remedial class. You might as well be a primary school teacher directly. So at least the job is stable? If you run a hobby class, it still depends on whether what you teach is low-level or advanced.
Needless to say, we are low-level, and low-level can do it. This is true, that is, we strive for the quality of customers rather than your own, so telling the truth has no future. If you teach advanced piano, for example, it has a wide audience. The upper and lower limits of piano audience are still relatively large, and now everyone is more sought after by pianists. So if you have very good piano skills.
Then your future is bright, because the salary of this piano teacher is still very high. You can constantly improve yourself in the process of tutoring students. Pianists are more popular in our society, so you can enrich yourself while making up lessons, so as to continuously improve your value. So the teacher of this tutorial class mainly depends on what you are aiming at. If the content of the professor is only aimed at those lower-level people, then I suggest that you still be an organizer, not an employee.