Zombie Crisis: Survival comes first

Introduction: [Apocalypse + Zombies + No System + No Superpowers + Plot Flow + Real Ordinary People + No Female Protagonist + Growth Type] Zombies break out and the apocalypse comes! How should an ordinary person survive in an environment full of zombies? In the dilapidated city, there are rotting corpses everywhere. The extreme cold is coming. Where can I find food? There are no fancy cheats, only the goal of survival... (I hope you will continue to read it, and you will not be disappointed later! There are only doomsday and zombies. Zombies will not mutate and evolve, and humans will not strengthen. )