How did I improve my Korean?

• I watched many Korean related shows (e.g variety shows, dramas, NCT related videos, etc) to help me get used to Korean also it improves my listening.
• I used to memorized at least 10-15 vocabularies in a day, I also wrote them down in my book to helps me memorize better
• I read a lot of Korean articles, it's super confusing, but I tried to translate it. I didn't publish it, just for learning purpose
• Reading fan accounts and tried to translate them too. It was hard because some/many of them use slang words, but this really widen my knowledge because I did a lot of research for it

Those are my way in learning Korean. People have different kind of way to learn things, but I hope it helps for those who asked me the questions.