As the OP is an international student, I’m assuming that a slight translation error made that sound the way it did. If not, refer to post #2.
As for understanding the “how”, all of the schools on your list are highly selective AND it is even more difficult for an international student, particularly coming from a relatively over represented region of the world. If you happened to need financial aid, you’d have been in the most selective bucket of all. You took a swing for the fences approach and I’m sorry it didn’t work out. In the coming months, you just have decide if you are going to stick with a local school option, reapply with a swing for the fences approach, or reapply broadly in hopes of securing a spot at a US boarding school, regardless of its name. Keep your chin up and best of luck!