I found the following users who may fit your language exchange criteria:

Username	Date	Post Link	Relevance	Offered Matches	Sought Matches
u/3sikk	2023-07-02	Post	`5`	Korean	English
u/fantastic-budget-454	2023-05-29	Post	`5`	Korean	English
u/no_chip_7114	2023-07-13	Post	`5`	Korean (Native)	English
u/chocochip1231	2023-07-27	Post	`5`	Korean	English
u/organic_ad9786	2023-06-22	Post	`5`	Korean	English

Please feel free to comment on the above posts to get in contact with their authors.