How to create game mechanics in Unity?

Question

Unity

Good afternoon, experts in the field of IT technologies.
I decided to start creating games, I chose Unity.
So to the point: I started the creation with a simple one, I decided to create a semblance of a naval battle for two, for example, in the form of hockey.

I want to make it so that the manager of the attacking team chooses 1 out of 3 points where he wants to go, and if the enemy does not guess where the player went, then the attack develops further.

and so on until the shot on goal is reached.
if the opponent guesses correctly, then the puck is taken away and the red team starts the attack from their goal.
how can this be implemented?
I will be grateful for any hints.