Slider en Javascript

Bonjour,

Voila je rencontre un petit problème avec mon code.
Mon HTML

Code:

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<!doctype html>
<html>
 
<head>
    <meta charset="UTF-8">
    <title>Slider</title>
    <link rel="stylesheet" href="main.css">
</head>
 
<body>
 
    <div class="wrappeSlider">
        <div id="slider">
            <div class="slides" id="un">
                <h1>First</h1>
            </div>
            <div class="slides" id="deux">
                <h1>Second</h1>
            </div>
            <div class="slides">
                <h1>Third</h1>
            </div>
        </div>
        <div class="nav">
            <a href="#" id="prev">❮</a>
            <a href="#" id="next">❯</a>
        </div>
    </div>
 
    <script src="main.js"></script>
</body>
 
</html>

Mon CSS

Code:

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html,
body {
    padding: 0;
    margin: 0;
}
 
a {
    text-decoration: none;
    color: white;
}
 
.wrappeSlider {
    overflow: hidden;
    box-sizing: border-box;
    position: relative;
}
 
#slider {
    width: 100vw;
    height: 350px;
    display: flex;
    flex-direction: row;
}
 
#slider div {
    flex-shrink: 0;
    width: 100%;
    height: 100%;
    constraint: layout;
}
 
#un {
    background-color: crimson;
}
 
#deux {
    background-color: #404040;
}
 
.nav {}
 
.nav a {
    position: absolute;
    top: 150px;
    font-size: 36px;
    color: black;
}
 
.nav #prev {
    left: 50px;
}
 
.nav #next {
    right: 50px;
}
 
h1 {
    margin: 0;
}
 
.active {
    transition: transform 0.5s ease;
}

et enfin mon JS

Code:

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var prev = document.getElementById('prev');
var next = document.getElementById('next');
var slide = document.getElementById('slider')
 
next.style.display = 'none';
 
prev.addEventListener('click', function () {
    var counter = 1;
 
    if (counter === 1) {
        slide.style.transform = 'translate3d(-100%, 0, 0)';
        slide.style.transition = 'transform 0.5s ease';
        next.style.display = 'block';
 
        counter++;
        console.log(counter)
    } else if (counter === 2) {
        slide.style.transform = "translate3d(-100%, 0, 0)";
        slide.style.transition = 'transform 0.5s ease';
 
        counter++;
        console.log(counter)
    } else {
        return false;
    }
 
})
 
 
next.addEventListener('click', function () {
    prev.style.display = 'block';
 
    slide.style.transform = 'translate3d(0, 0, 0)';
    slide.style.transition = 'transform 0.5s ease';
})

Je voudrais faire défiler une image chaque fois que je clique sur #prev ou #next mais je ne sais pas comment.
P.S: je suis débutant et merci d'avance