Is There Anything Wrong with Pursuing Immortality in a Zombie Apocalypse?

Single female protagonist, supernatural powers, zombies, pets, natural disasters, cool writing. Others' survival in the future is either rebirth or the system. Why do I have to rely on my wife's soft food? Damn it, why are the zombies that other people encounter at the beginning different from the zombies that I encounter? The zombies that other people encounter will die after being hit on the head a few times. How come the zombies that I encounter can use shields, become invisible, and teleport!