The whole topic seems like going down a rabbit hole.
"For do A, first you need to learn to do B...and to do B you need skills you only get by knowing how to do C...and to do C properly you need to practice for years until you develop confidence! Never seek for a perfect result!"
You are supposed to embark in a endless journey learning new stuff, improving slowly over the course of years, never focusing in seek perfection. https://19216811.cam/
But for a indie game developer it is strictly a skill to draw game assets, nothing more.
I know there are lots of free packs or art and the like, but many developers avoid them, as most developers want to create something unique, not a mashing of free assets everyone can find on the internet.
How do you approach to this without spending more time than the strictly required? I have searched and searched but can't find anything that is strictly about game assets, all courses try to embark you in an endless journey, not even a digital journey as they ask you to do ink/paper art.
I am not seeking to be a professional artist, i am seeking a specific set of skills to make 2D game assets AND ONLY that.
Are there any good online courses, PDFs or well-explained series of videos to learn to do 2D game art from ZERO?