Standardized tests don’t evaluate native intelligence. They evaluate preparedness. I think that with enough time and proper instruction many kids could improve their scores, but that may take more time than OP has.
Julie, make sure your list includes universities you’re ready for now. Run the net price calculator for each school on your list to make sure it’s affordable.
This is your biggest issue? How much can your parents pay per year without borrowing? You can only borrow ~$5500/year on your own. If you’re low income you may qualify for a ~$5k Pell grant. What state are you in? As long as the school is ABET accredited, your local state school will be fine for engineering. Outside scholarships won’t cover tuition and many times they reduce need, so colleges reduce grants by the amount of the scholarship.