Zombie Queen transmigration into a book

What happens when a bored and hungry zombie woman who reads to fulfill her basic needs transmigrates into a dungeon apocalypse novel, the book that caused her accidental death? If she was a cannon fodder, it would have been better. Instead, she was the passerby who died after handing the female lead, the special ring- a great golden finger that ended the apocalypse. And she wasn't even mentioned by the female lead, who claimed all the credit for being the world's savior, forgetting her sacrifice. After understanding the situation and losing the ring, her first thought was to look for food and sleep. She doesn't want to be the hero of the world, she is kind to leave it for the female lead to hug all the glory. But the two men she saved randomly always hung around, unwilling to leave her alone, and a reborn female lead who kept staring at her with hatred. Update Time: Tuesdays and Fridays with two chapters each. (⁠〃ﾟ⁠3ﾟ⁠〃⁠)