Hey, it's a languid lazy Sunday...

Nothing wrong with writing "languid," but it's more common to say "lazy Sunday."

I'm learning English, so that I'm trying to speak English all the time. But it's hard in Korea, right?

Nationalities and languages start with a capital letter in English.

I need someone who speaks English in Korea. Not as a tutor, but as a language partner.

I'm sure you'll find someone. Otherwise, I would recommend signing up for some trial lessons with the English teachers. The trial lessons are cheaper than the regular lessons, and sometimes free!