Need some help (noob)

I want to make a game like jelly jump which is an 2.5d endless jump game which you jump on platforms, the platforms coming from the sides of the screen.
I tried to animate 2 platforms but they are looping, and i need them to remain there and jump on the next platforms.
I just don’t know how to make them stop and start the second ones after i landed on the first 2 platforms.

Sorry in advance for being a beginner.

So, your topic is paurkor? This is a very big topic. You are basically asking us to tell you how to make your game. and if you want to animate try using software like 3dsMax, Mixamo, or Maya!