You have no idea.
I live in Latin America, and living standards in my country are much lower than in the US, but comparable.
We may probably consume like one third, or one quarter the energy you guys do. In some parts of Asia, they may consume like 1/10 or 1/20 of what you do.
They can live without power grid, without internet, without fuel and all that stuff. They do it right now. What you describe would be just business as usual for them.
We can prevail as a civilization with probably 1/10, or 1/100 the resources we currently consume. Just need to dramatically reduce resource consumption, but survival, as a civilization, is probably not an issue.