You look like a very interesting candidate. The lack of a standardized test (no SAT or ACT, and no AP scores) hurts your application, as it would anyone applying from a high school whose rigor is unknown to the college, because it means that a data point (testing) that allows comparison to others is missing, when the other data point (GPA in light of school’s rigor) is also blurry. But I think it is too late to do anything about this now.
For places like Harvard, consider that they might take the top one or two students in your nation - and they would expect that there had been national testing that would have shown such. I do think that you might have a chance at some of the slightly less selective schools on your list, because your ECs are very interesting. I suggest that you also make options in Colombia.