You have everything exactly backwards. You make the Malthusian mistake of seeing people strictly as a consumer of resources. We are, of course--but more importantly, we are a resource. In fact, people are the most valuable resource of all. We create resources that did not exist before (electricity, gasoline) and we create processes where we get the products and services we want while using less and less natural resources.
Consider the chart here [https://ourworldindata.org/extreme-poverty] It would appear that the more people there are, the richer we all become.
It's not quite as simple as that, but you really should read something by people who are a little less "doom and gloom"-ish about their prognostications. This pessimistic, "We're all going to die!!!" attitude has been around since the ancient Greeks. And it has always been wrong.