Humans absolutely created prosperity. The thing that was already here was nomadic hunter gatherer tribes that were perpetually one bad winter away from death.
Cutting off necessary resources is cruel. But refusing to acknowledge that those resources are provided by man made systems doesn't help you. Going to bed hungry is very natural. Wild animals do that all the time. Tap water is not natural, everything about how that water got from the river into your tap was man made.
Just because it's natural doesn't mean it's better, and just because it's man made doesn't mean it's bad.
By that reasoning there is nothing preventing you from being prosperous except your own greed.
Go out into the wilderness and be prosperous like the cavemen. Having your tapwater taken away shouldn't hinder you, those prosperous cavemen didn't have the luxury of any modern amenities. Just the streams they could find and the food they could scavenge or kill.
Abandon your greedy insistence on enjoying modern luxury and go prosper. You're the only thing stopping yourself.
And I'm sure you'll have no trouble staying connected when you find the cellphone tree. After all, if humans didn't create anything then everything must be naturally occurring. It's just an illusion that modern technology requires creation of parts that could never exist naturally.