Here's some real advice from a life-time fun-time dancer:

Isolate and duplicate.

Start with one arm. See what someone else is doing with that arm. Do that. Move on to other parts. Both arms, both legs, torso, hips, head and neck. Then get them to work together. Study fun looking small loop dances from the 70's and 80's and so on. You can floss, do the cabbage patch, the robot and on and on. Get one down and then another. Copy and paste one bit from one to another. Slap 'em around.

But most of all watch other people.

Then again, there's the chance that you have no rhythm and you're a hopeless left footer. Which is good, actually. It means you're free.