Trouble with Unity3D c# script tutorials?

Question

3D

I can't find tutorials on Unity c#.
I know c# myself. If you watch the lessons on YouTube, the code is understandable, but when you start writing yourself, problems begin. In the lessons on YouTube (Gosha Dudor), he doesn’t say anything normally that is really useful when creating a game.

Answer 1

https://unity3d.com/learn/tutorials

Answer 2

Can you take Godot?