Dancing is not for everyone. Some people don't have rhythm and look awkward while dancing. If you don't want, to take a class, then ask a friend, to teach you how. It can be done privately and at your convenience.
My advice: Don't cry and panic and pull your hair out. Take a deep breath and start again. Maybe you can have a private dance teacher or buy a Wii game called: Just dance that might improve your skills. If you don't have a Wii then you can try going on YouTube and see if anyone made a dance you can learn. But like I alway say practice makes perfect!