You are trying to bypass years of experience. It doesn't work that way.

Go read Blake Snyder' "Save the cat". And all the derivative works. And keep rereading them until things start clicking.

The entire ecosystem of "Save the cat" is about being a writer of sorts: movies, novels, theater plays etc. But it describes a very important point: every piece of creative work has a pattern. There are patterns on how to report news, there are patterns on how to write a movie, there are patterns on how to write a novel.

Therefore, there are patterns on making good video games. So go build the knowledge to write your own "Save the cat" for video games.