There are only a handful of US colleges which are need blind to internationals (Harvard, Yale, Princeton and maybe a few others). But the rest are need-aware, which means they take into account your financial need when deciding admission.
Although you come from an under-performing school, being Asian male doesn’t help. There are plenty of full pay international asians. So the chances of you finding a college that provides full financial aid in the US is going to be low.
You could try applying early to one of the need blind universities, but their admission rates are all incredibly low. Having spectacular ECs will certainly help, but it is very late in the game to start now. Having 3 predicted A levels of A* is quite impressive, so that should get some attention.