There is no need to say which is good and which is not. Everyone has different habits and learning styles. Some people may learn nothing in the end even if they devote themselves to very good English training.
There are many English-speaking institutions, each with its own characteristics. How to choose depends on whether you agree with the teaching philosophy and teaching methods of this institution when consulting.
It's best to apply for course experience to see if it suits you and is helpful to improve your English.
Listening class is the touchstone to test an English training class. Only after going through a formal course will you know whether you are suitable for this teaching method. At the same time, we can also find out a series of problems such as the level of English teaching in this institution, whether the teachers are responsible for class, whether the classroom atmosphere of students is active, and so on.
If time permits, it is recommended to choose a full-time English training institution, because this form of English training can help us learn English systematically, and learn English through the process of learning, practicing and using. Zhuhai iBS Foreign Language School is a good choice, full-time and closed teaching. Excluding external interference, I will concentrate on learning English for a while.