Libertarians help people. They just want to do it consciously by their own volition.
It’s like I’m happier when the people around me are happy. If you don’t tread on me, I won’t tread on you.
People often are not happy if they live in poverty. The libertarian solution to that is essentially “stop being poor.”
And it works! It does require not shitting on the education systems and getting many other things right. But directly helping poor people clearly doesn’t work in any real way in making them not poor.