Hello there.
I am currently learning Cpp, and got curious, how do i make a game from complete zero?
As i understand it, in such case OpenGL/Vulkan becomes your best friend. And that’s all?
Would be amazing to hear experts in this sort of development.
Thank you, and have a nice day.

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A beginner C++ developer asks about creating games from scratch without using existing game engines. They're curious about the role of graphics APIs like OpenGL and Vulkan in low-level game development and seek expert guidance on the complete process of building games from the ground up.

What is meant by developing a videogame from scratch?

making a game from scratch (even 2D) is a huge task. You need to learn a lot of fundamentals especially in graphics programming, low level programming and math (don’t underestimate the math!). but with enough passion, endurance and time it certainly is a doable task. one that will teach you a lot about computers, programming and yourself.
I recommend you start by getting basic sprite rendering and user input working. Then see where it leads you. It can help to use libraries in the beginning and replacing them later with your own code (e.g. a good math library can save you a ton of time and headaches in the beginning).

Came here for the thumbnail, was not dissapointed

if you really want to make your own game from scratch, you need to build your own engine. You have to use some framework no matter what. When people make game from zero, they use a library called SFML <a href="https://www.sfml-dev.org/" target="_blank" rel="noopener nofollow">https://www.sfml-dev.org/</a>. Which will help you render image and music and from then on you can make your own game from 1 I guess.

I would recommend raylib, until you are ready for something more powerful and complicated. <a href="https://www.raylib.com/examples.html" target="_blank" rel="noopener nofollow">https://www.raylib.com/examples.html</a>
It’s a simple abstraction over OpenGL and window management.
It’s fairly straight-forward and has lots of documentation and examples.
You can work with OpenGL in Vulkan if you want to manage stuff like buffers yourself. Actually in Vulkan just drawing a single triangle is a lot of work. Because you have define the entire graphics pipeline yourself. Like 1000+ lines of code:
See for yourself.
<a href="https://github.com/SaschaWillems/Vulkan/blob/master/examples/triangle/triangle.cpp" target="_blank" rel="noopener nofollow">https://github.com/SaschaWillems/Vulkan/blob/master/examples/triangle/triangle.cpp</a>
If you just want to draw stuff on the screen raylib is a better choice.

What do you mean “and that’s all?”
I suggest that you start with design patterns and OOP, because you will have to plan out your own classes and implement your own objects.
Engines like Godot or Unreal do the OpenGL/Vulkan part for you already. But they have been worked on for tens of years by teams of experts.
Don’t expect to finish it, but it is a great learning opportunity.
If you are a beginner, that only ever used Engine frameworks, then I advise you to forget about Vulkan for now. Forget maybe even about the idea of a game.
As first step: Just try to get a <a href="https://learnopengl.com/Getting-started/Creating-a-window" target="_blank" rel="noopener nofollow">triangle</a> inside a window… the rest will follow