Narration consists of many factors. I am going to focus on three of them, but the total list is extensive.
The first factor is point of view. Who is telling the story? To whom are they telling it? Is the narrator (one or more) telling the story as a remembrance of past events (past tense) or as they happen (present tense)? Why are they telling the story? Is the narrator a reliable story teller or just as confused as the typical politician? Is their view of what happened limited or omniscient?
None of these decisions need be explicitly revealed in the story, but you as the author must have clear answers tucked away as you write. Otherwise, the story meanders and the reader wonders what is going on (but not in a good way).
The second factor is narrative distance. The story may stand off and describe a character as cold, tired, and hungry. This is decried by writing authorities as telling the reader what is happening. Or the story may zoom in and describe the shivers, aches, and stomach grumbles. The narration shows the reader what is going on, and lets the reader handle the characterization.
Personally, I like stories that change the focus from time to time. I do not need the story to show me everything. The simple statement, "The protagonist drove to the store" is just as useful as a detailed description of the visceral pleasure of navigating ten miles of traffic and the frustration of parking. Unless that traffic is a factor. Then it matters. A lot.
The third factor is narrative speed. Perhaps the intent at the beginning of the story is to paint a picture of good friends, excellent food, quality wine, served on a warm summer day in a lush park of greenery and secluded walks where the cares of the world are far away. Then a car appears. Driving fast. Too fast. Panic and screams, cut off too soon. Two bodies, dead. Others injured. The sudden smell of fear. The world of comfort and serenity is forever gone, replaced in a few seconds by anger and regret that will linger for a generation.
The writer has to choose how fast the reader should absorb the material. A long sentence with many clauses will slow the reader down; it takes time to parse the sentence, store it away in short term memory, and then analyze the meaning, using knowledge and experience common to the expected audience. A short, crisp sentence is consumed in a single mental bite. It may take more sentences to get from point A to point B, but the reader will have a sense that things are moving. Things happen. Then more things happen. Then they end. Similar advice applies to paragraphs.
Put all of this (and many more factors) together and you have the voice that is (hopefully) uniquely your own. That is the key. How do you want to sound? What are you comfortable writing? I assume that you will be writing many pages. Writing in a voice that seems proper, rather than in a voice more natural to you, is just one more drag on getting the words on the page.
Write what you write. Find readers who enjoy that writing. All the rest of the "rules of writing" are mere commentary.