I can’t follow your second sentence. But we do need wider understanding of the drivers of migration: war, climate change, poverty, persecution and so on. And further, the global responsibility to address those.
Currently, an estimated 3.5% of the world’s population are migrants of any description, and of those the vast majority only travel as far as neighbouring countries.
The most frequent international migration journeys are between neighboring countries
Of course, that will change if climate change makes more regions uninhabitable. But that takes us back to global responsibility to address the drivers.