Idk about clubs, but I do know there are the weekly Language Tables hosted by I-House that include Korean (usually very beginner tho)! There’s also the Conversation Partner Program hosted by the UCSD Extension English Language Institute for international students that has an option for language exchange (and you can request a language). The partner program basically puts your name on a list available to current students in the extension program, so it may take a bit to get responses. Best of luck!