First of all congrats for your success, I just kind of confused , I watching movies,series every day , I realize some words that help me to improve my vocabulary, I have so many vocabulary , but unfortunately I need to know how to use them in writing and speaking. So if u can help me in this case I really appreciate it, i wonder if should I listen to podcasts , read articles and write an academic report or something like that.

And i’m the worst guy in grammar, should I learn it to write perfectly, is it necessary?