I’m not going to gloss over things: failing a core class is bad. You need to get the highest grade possible on your final to help mitigate that and at least try to get a D. Do as others have suggested above.
Getting into med school is about high grades in college and doing well on the MCAT. You don’t have to go to a top 30 school to get into med school. Be glad that this happened in high school rather than in college. Once you’re in college, you need to ensure you are on top of course material right from the start. You have very few opportunities in college to fix a low grade. Plan to attend office hours, study groups, and the tutoring center right from the start.
Focus on making a list based on your GPA and test scores, not on prestige.