I Transmigrated into a Passerby in a Beloved-by-All Novel, and Gave Up

A Slacker's Chaotic Life, With a Butler

Looking for books like After This Office Drone Side Character Gives Up, the Villain Takes Her In. The heroine dies from overwork and ends up as the housekeeper for a family of villains. She gives up trying, goes gloriously off the rails, and generally has a pretty reasonable outlook on life. I'd like a story set in a modern world that develops beyond the present day, but not one about the entertainment industry.