Combining sociology with statistics or data science would be a very usable major with several professional fields (demographics, insurance, risk assessment, community health, crime prevention..)
If you score 1500+ on the SAT (keeping in mind only 1% do), you can add a few more colleges that would be interested in having students with that area of academic interest and your qualifications, though your financial need may be too high a barrier for them: Mount Holyoke, Dickinson, Whitman, Skidmore, Grinnell.. Some public universities may have full rides for international students with high test scores and your academic achievements but it’s uncertain (those which do, are likely to want to restrict those since the current administration is so against internationals.)
You’re a very qualified applicant. You also happen to apply from an over represented country, need a lot of financial aid, and in a period where the US government is absolutely hostile to internationals. So, odds aren’t in your favor - but shoot your shot at Amherst ED. No one can predict whether it’ll work but do your very best and if you have any question ask here and definitely send your essay to one of the website’s official essay readers.
You could apply to Sciences Po, a highly ranked French college specializing in Economics, politics, and social science whose main competitor, LSE, doesn’t offer similar aid AFAIK although it’s worth it to inquire (deadline for scholarships is early November for Sciences Po, not sure for LSE).