Affordability is your biggest concern, I would think. If you can’t get financial aid and your parents cannot comfortably pay, you may need merit aid or a school that has lower costs.
I was going to suggest the “little Ivies” (google this) but again, paying may be a problem. I was also going to suggest you look at the Collleges that Change Lives website for ideas. Clark University is a school we like that offers merit aid for the kinds of community service you do.
State schools’ honors program is another possibility.
Harvard sometimes prioritizes accomplished kids from schools that don’t usually send kids there. But that is irrelevant if you cannot pay.