Here’s what I tell anyone that claims they’re bad at dancing - and it is something I genuinely believe - there is no such thing as ‘good’ or ‘bad’ dancing.
Instead a better framework is ‘real’ dancing or ‘fake’ dancing, and I think this exists on a spectrum.
If music compels you to move and and you don’t inhibit your self, that is real dancing. And all real dancing, no matter what it looks like aesthetically, is “good” dancing. It is in essence a spirit being free.
Fake dancing is what happens when people get too concerned about how their movement is perceived so they just perform dance moves that they’ve ‘learned’, regardless of whether the music actually compels them or not. Fake dancing might be aesthetically pleasing but it is not a spirit in action.
So don’t ever stop your “terrible” dancing. It is the only way to do it.