What defines a Hit and Run with property damage in California? Do I need a lawyer if I plead guilty? What are the potential penlaties?

I live in Orange County, California was involved in a very minor accident where I hit a parked car backing out. I caused a crack to the rear brake light which I have already payed for with insurance. However, I just received notice from the DA that I am charged with a “Hit and Run with Property Damage” and am due to appear in court. I can’t afford a lawyer, should I ask for a court appointed one? What penalties will i get? I don’t think I will get jail time as this is my first offense.