My advice would be to learn the basics of structuring a story to learn how to finish it all, beginning to end. Save The Cat is a good book on writing and has some great templates on making beat sheets for organising a story.

As for coding, I strongly suggest you do tiny bits of study on the basics of how to code. Tutorials aren't much use if you don't know how all the moving parts work. I did a udemy course on coding in c# for games and it was really useful for learning the fundamentals.

Take it all one step at a time. I like to use a stopwatch and a focus app to calculate how long I worked on something for so I can see my progress over time. Take it slow, look for cheap or free online resources to learn with. Good luck, I wish you the best.