Many people believe that learning a foreign language also gives the best result because leaners' qualification is the most important factor, not the study conditions.
--------well, this sounds a bit complicated and , in my view, does not provide a good entrance to your essay. I wish if you presented it in a more simple tone!
It seems you can write well... you have good vocabulary and grammar. Also I guess you are practicing for IELTS or TOEFL. If so, I think you need to pay a little attention to your essay structure.