Only a few schools meet full need and are need blind in admissions: Harvard, Yale. Princeton, MIT and Amherst. Otherwise, you have to apply for merit scholarships, and deadlines may be past. So sorry!
Do you have a social security number? That is needed for federal grants (Pell).
Read this about Lehigh, which is need-aware and only offers aid to internationals until funds run out. Need can affect admissions.
Lehigh University provides need‐based financial assistance to a limited number of admitted non-US citizens who have applied for financial aid and who have demonstrated financial need. It is our goal to meet 100% of the demonstrated need (not including travel and personal expenses) for as many admitted students as possible with the limited funds available. Admissions decisions for non-US citizens are, however, need-aware. This means that international citizens will be evaluated for admission with consideration of the ability of students, guardians, or sponsors to pay educational costs alongside our holistic admissions process. Some candidates who apply for financial aid and do not demonstrate need may be admitted without a financial aid offer. Other candidates whom we would like to admit may be declined because we have exhausted our financial aid budget.