The camera is not turning around the model smoothly

Dears,

could you please help, the avatar model on the below link i have upload it, and try to change the camera position for the model to focus on each part of the model same like the video on the below link:

the project link below:

the idea that i want the model is on scroll move with the camera to show the same transition on the video for each part of the model same like the below link:

please help!