If you’re a beginner and you attend a mixed level class then there may well be a point at your very first couple of classes when people are better than you, but it won’t last for long because very quickly you’ll start to recognise the moves, and you’ll be able to follow along.
The teachers demonstrate at the front of the class and they will give you help if you need it.
We also have the camera in the room so that if you’re at the back of the room you can see what the teacher’s doing even if you’re not in the front row.