Dual Rebirth + Flight from Famine + Ensemble Cast + Romance + Special Abilities. Not too depressing, so don't let that put you off.
In her previous life, Lu Qingyue was forced into a book as the villainess, and the System compelled her to do bad things, drive the plot forward, and deepen the romance between the male and female leads.
Nine years into the apocalypse, she endured extreme cold and scorching heat, snatched food from the mouths of the dead, and fought among hordes of zombies.
The System's missions drove away the well-behaved boy she had taken in and caused the death of her best friend. In the end, she died beneath a blanket of snow.
After her death, she saw the once well-behaved boy violently kill the original male lead to avenge her.
An alarm blared, and the System's icy voice rang out: "Apocalypse System activated. The new main mission is to save Gu Chenghe. Host, get ready. Three, two..." Time rewound, and Lu Qingyue was going to find the person she loved.
On the way, though, she ran into a group of people who claimed to be crazy. One could build a car, another could draw a map by hand, and another could make bombs. Turns out all geniuses are a little crazy.
The idea is novel, thank you to the author!