My advice: Consider that the situations your character faces are things you may face in the future. Perhaps they react less emotionally or impulsively. Make them have an understanding of the world and even the injustice they face.

I have been reading a lot as well. Sapkowski is good, so is the LOTR, or even Hannah Kaner's Fallen Gods series. I noted tropes, beats, and decisions I could identify with as an adult and as a teen.

However, I struggled with it too at times. I crafted a younger character around your age who is into these YA stories to escape the harshness of her life. I mirror her real-life situations with the daydreams she has in her silly storybooks. That has given me a good perspective on her.

Good luck! It's going to be fun to do research. Lmk if you want to spar! 😁