Have you ever failed a subject(s) so badly in yr 11 but then got your sh*t together by yr 12? Advice needed.?

Oh man was that me my junior year. I had AP English, AP US History, IB Biology, Honors Chemistry, Pre Calculus, and AP Spanish. I started off great but in my second semester I ended up failing Biology, Chemistry and Calculus. I felt horrible and my councilor said I lost my chances at going to a good university. However, Senior year I came back stronger than ever because I push myself to do better. Having hit rock bottom made me realize that I had to do better than anyone else if I wanted to go to college. I dropped most of my Advanced Placement classes but backed it up by enrolling in rigorous math and science classes and aced all of my classes. You just have to push yourself harder and don't give up, you are in a slump and you need to get out of it fast. Ur obviously really smart so don't give up u will come back from it as long as you hit the books a bit harder. Good Luck