After the Hated One Gave Up, Everyone Regretted It

The Group's Scapegoat, Universally Hated, Then Making a Comeback

A Story About a Female Lead Who Is Reborn Again and Again, Unable to Change Her Fate, Until She Finally Gives Up

Looking for books like "Died Tragically Three Times: After the Villainess Gave Up, They All Panicked". Are there any stories where the female lead is reborn over and over but can't change her fate, so she finally gives up and ends up living a wonderful life?

Any Stories About Someone Who Seems Like an Optimistic Ray of Sunshine but Is Actually Depressed and Hated by Everyone?

No awkward, self-deprecating protagonists. Other characters may initially think the protagonist is a burden or assume they got where they are through connections, so they treat them poorly. Later, the protagonist wins them over and they accept them. Once they learn the truth, they regret what they said and did.