I can certainly see the dilemma here! You do currently work part-time at least, right? Perhaps you can start saving towards first and last month's rent at a new place, possibly in an area with public transportation.

Also, is it that nobody is hiring, or that no jobs that you want are hiring? Some places are always hiring, such as fast food places. There is no shame working in a place like that, and it might help you save up more money faster. Just a thought.

I think moving out of this toxic family environment and getting an apartment of your own would do wonders for you and your self-esteem.