I asked this in the other thread, but have you run NPCs (the net price calculators) for any of the four colleges you feel are your most “likelies”? You really need a better idea of whether you are just chasing your tail in terms of this idea that you are eligible for a “full-ride” from any American college.
ETA: Just a reminder, that on the other thread you have already stated that at least one of your parents has a college degree.