Good is subjective, you can write a technical masterpiece in language and people hate the characters, the setting and the story.
So, is the question improve as a writer or a storyteller, because they are very different things.
Some writers focus on describing the world as a focal point, some do it from the person's view of the world and the consequences, others build complex lore and world building to make the world feel alive, but can then lose themselves within the reeds so to speak. Focusing on the small details is great, but if it doesn't add to the story overall, it's just filler or noise and can even take you down a tangent and slow the overall pacing of the story.
Personally, I always think back to the Dragon Ball Cartoons when I was a kid, and remembered the 'filler episodes' and thought to myself, why did those exist, what did they actually offer to the plot other than letting the company stall to come up with the next idea etc. So, I always ask the following whenever I write a chapter:
What is the point of this chapter?
Did it achieve this?
If it does something to help move the plot along, and did what it intended, then you've removed filler and bloat from the story and people don't feel like the story is meandering along. A lot of disengagement stems from that.
As a practical suggestion, try reading your story as a reader, and you'll naturally come up with things you hate about your story and things you love. The things you hate, will likely answer most of your questions as to how to improve. Or if you want something profound to remember it by...
You are your own harshest critic. If you can master your failures, competence follows.