Welcome, Kiaiello.
There are lots of ways of doing this, and different writers find different methods work. Here's one I find useful, that may help you:
Write a scene at a time. A scene is a unit of tension. In it a main character will either attempt something difficult or dangerous (action), or face a dilemma (reaction). Your main point in writing the scene is to get this to happen. You begin the scene by choosing the task or dilemma and deciding who's present in the scene.
Now give each character a reason to be in the scene: something that they want. If they face any opposition to what they want, make a note of that.
Now describe the setting in a single sentence or two. Where are they? What's the mood of the place? Who's present? What important things are they doing?
Now introduce the action or dilemma. Make sure that each character gets to pursue its objective. Introduce any opposition.
Now resolve the scene, and describe any reactions.
Now set up the next scene.
In the artificial and rather hastily-written example below, Private Detective Jane and her young side-kick Jim are trying to break into the mansion grounds of a suspected criminal. It's patrolled by guard-dogs. Jim has a schoolboy sort of crush on Jane but is too shy to pursue it. Jane doesn't know about Jim's crush. You could tell this in 1P or 3P. I chose a limited 3P focusing on Jim because his character tension is interesting. I've made Jim the viewpoint character, even though Jane is the main character - I did this to help make Jane look a bit heroic, even comic-bookish.
A sandstone wall loomed behind dripping elms. Jim's hair dripped too, but he braved the drizzle and tried not to shiver. It was dark enough that he couldn't see their van across the road.
Jim squinted into gloom as Jane propped the aluminium ladder against the rough stone. In her crepe soles, Jane hardly made a sound, he marvelled. How did she move so easily in the darkness?
'I can climb up first', he offered. 'Scout it out.'
'Shh. Dogs', she shot back tersely. In a moment, she was up the ladder and crouched motionless atop the wall.
Jim waited.
Jane didn't move.
'What's happening?', he hissed.
Jane jerked a hand down flatly, her attention on whatever it was over the wall.
Jim shut up.
Time passed.
Jim dripped.
He thought he felt a mosquito on the back of his neck, but was scared to move. Maybe it was his imagination. Do mosquitoes come out in the rain?
His neck itched. He scratched it.
'Okay. Come up.'
Jane's dark form vanished behind the wall.
The ladder creaked as Jim mounted it. He hadn't even heard her land.
After a while, this may seem a bit formulaic. You can find ways to vary this approach: try opening with dialogue and then setting the scene. Or start the scene at the end, and then explain how characters got there. Or try telling the whole scene in dialogue and not using any descriptions. Or try just showing the physical elements of the scene (setting, actions and dialogue), and don't describe the characters' thoughts or feelings.
You may also find that you want to introduce information into the scene that isn't part of the action or dilemma. E.g. what are they doing there? How do they know one another? This approach doesn't resolve such problems, but offers a start. With a bit of fiddling you can write a whole first draft like this if you wish.
Good luck!
First of all, "retarded" is not a word that should be bandied around as an insult, please don't.
Retarded: "relatively slow in mental or emotional or physical development". Sounds like an apt term for how poor Kiaello feels - though lots of writers experience this of course.
I don't believe that writers should stigmatise one another for using language that fills its literal meaning - whatever the meaning might connote in other contexts; else you're consigning your peers to the
euphemism treadmill. Language is a writer's tool - we don't need that tool further blunted by politics or political so-called 'correctness'.