You may want to find some other tutorials… there are plenty of good ones out there. No offense to Moniem, but it’s hard to follow him sometimes and he likes to interject a lot of unneeded dialog, which makes learning more difficult than it needs to be. Also, isn’t there a template for what you’re looking to do? which would have the controller in it… you can either reference that, or just use it to make your game.
Also, your link isn’t to the player controller video, it’s to the scene building which isn’t any kind of real tutorial at all… the next video in the list is the player controller one, but I couldn’t watch it to try and find out where you might be having an issue… he’s just too talkative (without saying anything) for me. … try to find a better tutorial.