Thank you so much for this kind reply, it is extremely helpful !
Indeed, i have to admit that my application package is not well-designed this year. USC, Upenn and UW-M are three schools i am most familiar with, because many senior students went there from my school in previous years. I probably will gap a year if, well, get another rejection and be more well-prepared next time.
thanks again! and congrats to those successful candidates!