“They spoke about their “ground-breaking” research, start ups etc (fyi, they are so dumb that they didn’t even know that personal start ups are prohibited).”
Top colleges don’t believe young kids really do “ground-breaking research” and start-ups aren’t what they look for.
You just got caught in the international competition. Top schools have a idea of international diversity they want and sometimes, it’s not the year to admit many from one country vs another. Plus, countries like India have many applicants to the same top US colleges. And you may have been seen as two countries.
Go to Plan B. Apply here for grad school.