ANSWER:
Had they chosen to be guided, Allah would have guided them.
Besides, we believe that Allah is wise, fair, knowledge like and just. Who would dare and challenge all of that or object? If he throws every last one of us in hell, this is His creation and we belong to Him and no one can do anything about it.
Therefore, you have one option and one alone: do your best to worship Him as He ordered and commanded and you might make it.