Trying to create a simple space game

I'm still having trouble trying to build a simple space game like Space Invaders from the 80s. The tutorial seems to be outdated to the platform that I'm using. I'm just trying to get my spaces craft to move/fly around using arrow buttons and the digital "bugs" to come down from the alien spaceship towards the white spacecraft. There is no longer a PUSH component to add to make the spacecraft or anything move around. Are there any other tutorials on here that I can use that are more updated to the Unity platform?

 

Create with code (on Unity Learn), has a number of tutorials that should help.

 

GhoulishGames,
Thanks! I'll give it a try!