If you come here looking for a rl fight and use a model pic, most people looking for rl fights won't read your profile. They see the pic assume you are some guy thinking they are morons and move on. Plus consider your story:
18 year old girl looking for highly violent fight styles. If legit you sound like someone who has no clue and could be dangerous to themselves or others. Honestly if you wanted a brawl at 18, join a gang or a gym and take up a combat sport. Combined with the model pic it smells fishy.
If you find takers good on you. But don't be shocked if you don't for the reasons mentioned.