Hey, I heard you had trouble with English words and grammers, also you can't quite understand other people speaking English. I might have a solution for you. You can watch English movies with only English subtitles on, that way when you don't understand something, you will incline to look it up so you will remember, also you will know the correct way to use it. Trust me, it works much better than just remembering words without context. However there is a downside of this method: you only see the effects after a while. Hope I helped, good luck!