Who owns your lodging? In most states, unless a minor is emancipated, they cannot purchase their own place to live, whether that be a mobile home, an apartment, or a house, nor are they permitted to live alone. I do not know your family situation, but if it is owned by others, reach out to them and explain the situation. If you own it - it is not against Christian charity to set boundaries. At the very least, I assume you have control of your wifi and TV. You can set that to block objectionable content or restrict their access. You can make it clear that they must contribute monetarily or chore-wise to your living situation. Do you have any family or friends near you who would be able to help enforce them either living within the bounds of morality and charity or moving out?
I'll be praying for your situation.