I just found someone who doesn’t speak English and was grateful for me to talk to them who speaks Korean as a first language. If you live in Korea, people like that exist. In fact the guy I used as a conversation partner even had a smaller vocabulary in Korean because he was dyslexic, so it made him easier to understand. If you are not in Korea, but you want your level of Korean to be exercised and go up, there are a couple of things you can do.
First, you can find a book written in Korean and look all the words up you don’t know as you are reading. Before you do it, you would have to study a lot of grammar because otherwise, the words may be hard to recognize because they conjugate more than verbs.
Something else you can do if you are not in Korea is to find the Korean dramas online and watch them. The ones online have subtitles. I used to watch them in Korea without subtitles, and I was forced to get into what they were saying or get nothing out of it. If you can practice and get your ears working, you can find the definition of words in the subtitles. You just have to remember the differences in the grammar and word order as well as know where to look to find the definition. Watching the Korean shows and repeating what they say is good for you too.
If you follow my blogs, you can learn Korean grammar because I do grammar blogs about the Bible. I explain some pretty difficult grammar principles, and you can learn grammar so you can understand when you read Korean books or watch Korean shows better.