I think you were lucid! Don't feel down, this is actually pretty common.

You need to remember that when you become lucid you should just stop and take in everything around you. Stabilize the dream. You want to use each of your senses in order to make the dream more stable. First of all, keep reminding yourself you're in a dream. Then reach down and touch the ground and anything around you. Then smell anything you can. Just use your senses! After you feel like the dream is stabilized, you can continue doing whatever you want. Good luck and more lucids to you!