The same person appears in the same photo many times. ...

What you said is similar to the multiple exposure effect in photography. First of all, this is something that retarded software such as Meitu Xiu Xiu, Light and Shadow Magic can't do. You have to know photoshop. If you have a little photoshop foundation, I'll give you an idea: fix the camera angle with a tripod, people constantly change positions and then take multiple photos, and then in photoshop, use a mask to erase people on different layers. Then, combine all the layers to get it. The key to this is to be careful and pay attention to details. Don't imagine that simple software can achieve this effect at once.