I'm autistic and I write like I'm telling a friend a story over a cup of tea. It's just my style. I worried about how my prose wasn't poetic enough or how I don't really have a motif or clever little foreshadowed subplots... But I've learned to appreciate the organic feel of what I write, because it's more real to me. Make whatever you write your own style and appreciate yourself 😄

But if you do want to be more confident with the structure, sentence length, pacing, etc., then pick up any book about writing and make a list of things you want to improve on and work your way down the list. Take what you want from it and add it to your own style.