function get_comment_list($conn)
{
    $sql = $conn->prepare("SELECT * FROM comments");
    $sql->execute();

    return $sql->get_result();
}

$pics= get_comment_list($conn);

<?php while ($pic = $pics->fetch_assoc()) : ?>
   <?php include('_comment_list.php'); ?>
<?php endwhile; ?>


_comment_list.php:

<div class="pics">
        <?php if ($pics['images'] != null) : ?>
            <img src="<?php echo asset('images/uploads/' . $pics['images']); ?>" alt="<?php echo $pics['images']; ?>">
        <?php else : ?>
            <img src=<?php echo "https://picsum.photos/300";?> alt="Hiba">
        <?php endif; ?>
    <p class="comment">
        <?php echo $pics['comment']; ?>
    </p>
</div>