What to Do After Quick Transmigration into a Cannon-Fodder Female Lead

All my first earnings have been donated. Lin Lili, inner thoughts: Another day of being a sweet, soft, universally adored girl! System, inner thoughts: Qianqian, sweetheart, they're all just pretending to play with you!!! Note: The heroine is universally adored and inspires love at first sight. She's not brainless. No romance pairing. She's sweet and soft, but also level-headed and clear-minded. World One: A minor character misunderstood by netizens after joining a dating reality show World Two: A minor character treated as a stepping stone in a period novel World Three: A hardworking, long-suffering cannon-fodder soldier in a war novel …and more (suggestions welcome)