One of the best films about nuclear war is the TV movie "Threads" from 1984. Unlike most films about the topic, it carries on looking at what happens in the weeks, months and years after a nuclear attack.
This isn't "mad max", it's not a fantasy or escapist thing. It's an attempt at a realistic depiction of nuclear war done in a documentary style:
https://www.youtube.com/watch?v=IUmUz8ol9Ow
It had a much smaller budget than similar films in America and elsewhere, but it also had a much freer hand in depicting how bleak the world would be for the survivors. There's less holding back than in "The Day After" etc.
