How to generate a row of 3 random objects

Hello!
I want to create an event where 3 objects are randomly generated in a row, like the captured image. I designated the 3 images as animations 0, 1, and 2.

  1. Is this the right way to do it?

  2. When the game starts, 10 random objects are listed at once, but how can I make them appear one by one from the back and then move to the front with a time difference?

  3. How can I make it so that when I touch the object at the front, it moves to the front one by one and one object is randomly generated in the back?