How do you pass your road test for drivers license?

So I'm 19 and I haven't gotten my license yet. But I recently went to the DMV and was going to take my road test but automatically failed because of a crack on the windshield which is understandable. The car that I took wasn't mine it's a friends car, it was my choice to take it because it was small and I don't have another car that is small. I only can use the Honda Odyssey and that car is big and hard to parallel park and reverse park. I guess I need more practice. But I don't know what to do, I do ask my mom if I can go practice but she gives an attitude and rolls her eyes at me. Then tells me I don't need it. Before I went on the first road test she kept telling me to practice and that I needed a license. So I don't understand my mom she acts really weird. I just wish I had more supportive people around. I'm the oldest and my stepdad doesn't give a s*** about my license he didn't even care about me failing or asking if I want to go practice.

Read more: How do you pass your road test for drivers license?