Iry not to be too discouraged. Remember that MIT admits less than 5% of its international prospective undergraduate applicants:
(quoted from How To Apply To MIT | MIT Admissions
"How MIT Considers International Applicants
MIT receives many applications from very smart and talented international citizens. From this great pool of candidates we may only take a small cupful. Every year more than 3,000 international students apply to MIT, and we can admit fewer than 150.
We limit the number of international students we can accept because of our generous financial aid. MIT is one of the few schools in the world that offers need-blind admissions and meets their full financial need......"