The Muslims are always united, while the whites remain divided along political allegiances. That is how they are able to achieve whatever they want, despite consisting just 5% or 10% of the population. Look at London. Just around 15% of the population there is Muslim. And still, they got Sadiq Khan elected as the mayor of that city.
Muslims are arguably even more divided among sectarian lines. Half of the violence in the ME now is related to the Sunni/Shia rivalry. As to London, hove you not considered that Sadiq Khan was elected because people actually support what he stands for, as opposed to a small minority of Muslims that conspired to have him elected?