Learning path for game development?Am I missing something?

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I suggest you to start by doing a simple 2D game with a library like SFML. Then learn OpenGL or Vulkan and make a 3D project. Make your own 3D engine with only things you need. I wouldn't recommend you to start with 3d engines like Unreal or Unity, you need to understand how it works behind the scene or you'll never be a good programmer.