Is it possible that humanity and civilization will endure for 30 years?
Yes. Humanity will not devolve into a permanent state of individualism, chaos, and violence. The human network and our social evolution and cooperative nature is not resource dependent. The change will be drastic, what emerges will be very different, a return to our normal scale of consumption, reconnections to local communities, and local environments will result. Humanity can and will endure the coming collapse.