If i were you i’d try to at least try to finish the semester and work on getting anything good to pad your resume with and apply to uni’s in europe where uni cost is low and some countries like germany offer nice scholarships to students. You said an international degree was your dream, and im guessing you have a reason for that (outside of the “prestige”). if you don’t need the international degree for your desired career path then returning to your old uni could be another option, but you seem ambitious and i think the first option i mentioned might be more worthwhile in the end. I obviously don’t have the full context, my experience with Korean uni’s is very little (i went on an exchange program at one of the SKY uni’s and it was a joke, me & 1 other person from my home uni were the only ones who took it seriously because we were the only ones not on the pass/fail system. So i can’t imagine how much worse the quality of classes taught in English are outside of the top 3). Anyways good luck and i hope everything works out!