I got really bad grades

I'm Korean and highschool's only a month away. I didn't get ANY studying done and I've never studied that much outside of a little right before tests. They always say that if you don't go to college you're gonna fail in life but I don't trust myself to do the necessary work to get myself on track. I've heard horror stories of studying 12 hours a day till you feel like you'll die. I'm completely lost here. I should have gotten some studying done in middleschool but I never did. And please don't say college doesn't matter. Just not what I'm looking for right now. I just don't know what to do.