Stay away from pre-built softwares, Unity, etc... if your aim is to learn you have to write your code from scratch.
I already suggested this Javascript engine multiple times, I think it's one of the easiest approach you can have:
IvanK LibThere are some basic demos already explained on his site, if you litterally don't know anything about coding, the easiest thing you can do is watching some youtube videos about basic Javascript notions or read some basic guide on the web ... in just a few hours, or maybe days, it depends on you ... you can easily read the code written in those demos and easily replicate the
Keyboard Events one , for example, where you can move your sprite with arrows keys on your keyboard.
All of this will be just a small intruduction of what coding means, while having fun creating a small game, but very usefull most of all to understand if you like it or not.
P.S. I know it's easy, but still very powerfull engine, cause I made myself a small game some time ago using it.