Pure natural disaster + rebirth + hoarding + strong female lead and strong male lead + space

(Not a Mary Sue, there is a male lead, but he appears relatively late in the story)

In his previous life, when the apocalypse arrived, Jiang Jing had just finished his internship and was holed up in his dorm revising his thesis every day. The government issued a warning of heavy rainfall, and Jiang Jing stockpiled a lot of food in order to revise his thesis day and night. Jiang Jing could have just relaxed, but unexpectedly, after he had just lost his father, stepmother, and younger brother, the school heartthrob came to seek refuge with his best friend, and he kindly took them in.

Unexpectedly, they ended up handing her over to a local bully for such a small amount of food. Unable to bear the humiliation, Jiang Jing bit her tongue and committed suicide...

Given a second chance at life, she decides to tear apart the scumbag and the bitch before giving up.

But where did this handsome fiancé of mine come from? Wait, don't touch me... You'll support me? Who needs you to support them...

Jiang Jing was keeping a very low profile at the government base, so how did he still get targeted? Seriously? I just wanted to slack off...