That's certainly true and remains an unacceptable state of the world, but it's also true that globally, it's a steadily decreasing number, even under conditions of population growth.

E.g. looking at child mortality over time

https://ourworldindata.org/grapher/child-deaths-igme-data

And in same (many?) cases it's intentional, e.g. by overthrowing governments so the West has cheaper oil, gas, or bananas (Guatemala).