You can interpret this dream yourself. All you need to do is read it with this bit of information, that all these people you meet represent your attitudes in relationship with others.

In the first conversation you had with the male, you felt confident. This means you are comfortable with talking to other guys. You feel as if they respect what you have to say. When you talk to the girls, you are on shaky ground, confused, feeling mixed feelings, first you feel this way (normal), then you feel another (out of the ordinary). Sometimes you are yourself (retain your personality just like in real-life). You are even confident about girls at times! Sometimes you notice an attraction and think about acting on it, but maybe you are a little "uncomfortable or just not ready." Pretty normal for an 18-year-old guy, wouldn't you agree?

That part about the car is your current insecurity about taking control of your life, also normal at 18. When you thought about it later, you were not surprised that you had screwed up the parking. That reflects your own expectation to screw up. [lol. Stop expecting that!]

Oh, I nearly forgot the little variety neighborhood. That reflects that you are in a place in your life with many choices to make. Girls and how to relate to them are among those choices.

Now that you know the key about interpreting those figures as reflecting your own feelings/attitudes, you can do this with all your dreams. As you change, the dreams will change, too.

Good luck and blessings!