Are there any scholarships for studying in Korea besides GKS?

Hello! I was born and raised in the United States, so I'm disappointed that I can't apply for the GKS scholarship. I want to study in Korea and plan to enroll in Yonsei University's KSI program for 3-4 semesters. After that, I would like to pursue a degree at a university, and I'm curious if there are any scholarships available besides GKS. I graduated from high school online, and I'm not sure which direction to take now. I can apply directly to universities in Korea, but to do that, I feel like I need to work three times harder at my two current jobs. I would really appreciate it if anyone could share information or experiences about other scholarships available for foreigners in Korea. Your advice would be a great help.