If you come to teach in the west, the most important thing is to solve the problem of accommodation. Ask this question clearly when you contact, because I recommend you to go to some remote villages. If you want to realize your teaching ideal, you must go to the countryside.
I don't know where you go to school. My suggestion is to try a poor school nearby first. In fact, there are many schools around us that need support, and we don't have to go to the west.