First of all, in the camera, the range of people's movements will be smaller, and all the strength will not give people the feeling of a real person, so if you want to dance well, you must first open the shelf and try your best to watch it in the camera. You should know this.
And then a lot of actions get weird after a while.
If you want to improve this, you should record it after each dance, preferably dancing together or something.
You can compare your movements with others'.
It would be better if someone stronger danced with you.
The contrast in the video is stronger than that in the mirror.
You can try
Every time we dance in line, we must record everyone's questions, so that we can dance absolutely neatly in the real performance.