Help me get my first car

I'm a 17 year old girl looking to better myself with good old fashioned labor in the form of a job. With college right around the corner, my family is in a tight predicament with money. I cannot afford a car on my own but I need a ride to and from work. Uber, Lyft, and other taxi services get very expensive, there are no buses in my area, and walking is not safe. I am here to ask the public for help. I am only asking for $500 which is a lot, yes but I am using it to make my parents burden of not having enough money a little less heavy