Question My first week of Unity

Hi to all of you I'm Seb, I just started Unity this week and I'm amazed at how cool it really is but I really hope one of you is holding an answer to this problem.
Well sometimes In this week I started making a game, first I started programming my "First person movement" for my player. Following one of the "Dave / GameDelevopment" tutorials on youtube called "FIRST PERSON MOVEMENT in 10 MINUTES - Unity Tutorial" once I had finished everything seemed to be working perfectly except I could not move in any direction (I could only look around).
I tried multiple times to fix it once or twice I even restarted but I always got the same problem.

Does any of you know how to fix this problem It would really mean to me a lot.
Thank You very much - Seb

 

You provided a bit too little information, we don't know what your game controller script looks like.

Secondly, I am a C++ programmer with many years of experience. And I can tell you that you won't learn anything in 10 minutes. I've gone through a lot of different guides, but the ones that helped me the most are listed below.

1. Beginner Scripting: https://learn.unity.com/project/beginner-gameplay-scripting
   
2. Intermediate Scripting: https://learn.unity.com/project/intermediate-gameplay-scripting
   
3. Junior Programmer Pathway: https://learn.unity.com/pathway/junior-programmer
   
4. Manual: https://docs.unity3d.com/Manual/index.html

Learning Unity from this set takes 1-3 months (depending on how much time you can devote to it). Why so? Most of the tutorials I've come across teach only imitation, not transfer knowledge. And if you want to create something, you need to know the basics, be able to deal with documentation and solve problems.

Edit:
I forgot the most important thing. Keep it simple at the beginning. Not everything is easy to grasp, and many things are simply impossible out of hand.