How can I make a fully functioning 3D videogame with all this coding, whilst keeping it all simple?

Answer 1

use an engine! for example Unity, it's free and very good for beginners, however you need to know a bit c# or javascript

there are also very good game engines like Cryengine, Unreal Engine, ..

Answer 2

C++ is perhaps a good solution, but definitely not the only option ;)
Done this with Python's pyglet:
https://www.instagram.com/p/BQ-8ubDDTNi/

Answer 3

thanks, I have been wanting to know the answer to this too

Answer 4

thanks! (got a side project to make a fanmade videogame version of Michael Grant's GONE Book Series)