> 특히 저는 미국 현지인의 논리전개나 Thought process에 생소함을 느끼게 되더군요
This person is ahead of many others.
The first step is to recognize differences. If you can’t articulate how your English and others’ are different, it is really hard to improve yours. This doesn’t suddenly come to you. You need to put an effort to it. Try mimicking others are saying when you are alone/home.
You also need to have a personality, in other words, your own thinking. Otherwise any conversation involving you will end very quickly. Yes, no, or I don’t know. Observe what and how other people lead a conversation.