which is the best option to get into a good university?

This year i have started AP Biology and on the first test i recieved a 53, this was the first test i failed in my life. I am currently taking APUSH along side this course. I am feeling completely overwhelemed in my school year. I am a junior this year. I feel like i cannot manage the classes i have while studying for the sats and extraciricular clubs. I was thinking about switching AP Bio with honors physics. But i am worried because i want to go to a good school-like Nyu, Columbia, UCLA, BROWN, duke etc. There is also the fact that there are people in my grade who are doing all the previously mentioned simaltaneously. I have a class rank of 20 of 189. I believe that if i get anything under a B it will hurt my gpa, and right now i have a d-. So should i take ap bio, if any additional details are require please specif i will add them within 5 min of rquest, also any answer at all is appreciatated thanks