RPG Core Combat Creator: Learn Intermediate Unity C# Coding
A very complete Unity course, highly recommended.
Unreal Engine 5 C++ Developer: Learn C++ & Make Video Games
A great introduction to Unreal Engine 5 (It covers very basic programming concepts during the initial lessons, speeding up is your friend).
The Unity Shaders Bible
Tons of great content. Perfect if you already have at least a basic understanding of shaders.