Unity uses Animator to make a simple animation

1. Add the Animator component to the unity object

 

 2. Add Animator Controller under Assets under Project

 

 3. Add actions to the Animator Controller

 

 4. There are arrows between actions, you can add action conditions

 

 5. Add conditions

 

 Add condition type

 

 6. Add Action Animation to Animator

[1] Select the object to add animation, click Ctrl + 6 or open the Animator under the window