I work in a hotel. Because I am under 18, I borrowed someone else's ID card to register. I didn't sign the contract myself, but now it's because of my family. ...

First of all, legally speaking, you constitute a de facto employment contract. As long as 16 years old, you only need to submit a written application one month in advance, and you can leave your job directly one month whether the company agrees or not. In fact, most hotel employees can leave whenever they want. He won't sue you for such a trivial matter. Don't worry, and you have no savings. Leave your documents at the company. If not, you can pack up and leave.