Surviving on a Deserted Island as a Nuisance Villain

I ended up trapped inside a game where the characters get stranded on a monster-filled, deserted island. And of all people, I became the weak, sickly villain who only clings to the main character and causes trouble. Unlock survival skills and escape from the deserted island! But if the main character dies, the quest fails and the possessor dies as well. Current chance of main character’s death: 65%. So for now, I follow the system’s instructions—saving the main character and completing quests to unlock survival skills… But then: “Jo-yeon, how do you know all this stuff? Are you some kind of survival expert? Aren’t you a high schooler?” “Jo-yeon, how are you so good at finding tropical fruit?” Not only the main character, but even the ones who used to hate me start relying on me completely. Survival is supposed to be done by yourself, you idiots!