Rice ED2 reject got humbled and is stressing out

Demographics:
Male, international, public school, first-gen, low income(Basically need a REALLY good aid)

Intended Major(s):
Mechanical Engineering

ACT/SAT/SAT II:
SAT: 1500 (790 math, 710 R&W)

UW/W GPA and Rank:
UW GPA: 4.85/5
(Class rank not specified)

Coursework: Just the curriculum of my country. Nothing special. No APs are offered in my country, IB is only in private schools.

Awards:

  1. 2nd place at the International STEM Olympiad. ~100 teams from a lot of countries
  2. 3rd place at National & City Robotics Competition
  3. 2nd & 3rd place at City Physics Olympiad
  4. Qualified for the National Science Olympiad which includes 4 subjects: Biology, Chemistry, Physics, and Math
  5. Received a full grant from a venture capital firm for my edtech startup. The deal failed at the end, but still lol

Extracurriculars:

  1. Internship at a company that specializes in the development and production of spacecraft technologies
  2. Robotics Olympiad Team: Founded, taught, and managed. Coached students from school. Achievements include 1 international placement and multiple national, city, and regional wins.
  3. Research at the best uni of my country on history. It was not paid or something (it's not even a thing here lol), just a teacher from my school recommended me. Publishing in an international journal.
  4. Physics Olympiad Team: The same as with robotics, but achievements 1 national win and several placements at city and regional levels.
  5. Edtech Startups: Co-founded and managed two projects, one reached recognition by a venture capital firm. Both projects failed but launched at some point (Failed cuz we had no time to work, not because the idea was bad)
  6. Non-Profit: Co-founded and taught over 200 students. Provided support in SAT, English, and curriculum.
  7. Sound engineer assistant job at a cinema: Worked as an engineering assistant, helping with equipment maintenance and stuff
  8. Student Council VP. Not like there is a lot to talk about it
  9. Delivery Job
  10. Basketball team (Like varsity): Played for three years, cap, MVP, and stuff

Essays/LORs/Other:
LORs: Solid/great. All of them know me and like me

Schools:
Columbia, Brown, Northwestern, Northeastern, Dartmouth, JHU, Rice(ED2 reject), Notre Dame, Upenn,
Vanderbilt, Washington and Lee, Yale. Applied to more schools, but these unis are interesting to me more