Help me feel better about driving

So I’m 18 and can’t drive (🙄 I know) I’m doing well getting around on my bike and from catching rides but I hate relying on other people to get to work and appointments when the weather is bad. I’ve been behind the wheel of a car a few times and the whole time i was so stressed it made me not want to drive at all. I’m scared I’ll zone out and hurt someone or wreck the car