Get posts order by ACF field value as title in Wordpres

I have a custom post type: club-member
I would like to display a list of all members
and separate them by ACF value called: region
the region custom field is a text field with a dynamic value.

In the end, I should print something like this:

England (Dynamic "region" field within the post type "club-member")

Member 1
Member 2
Member 3
Member 4

USA (Dynamic "region" field within the post type "club-member")

Member 5
Member 6
Member 7

I am using a regular get_posts:

<?php
$args = array(
    'post_type'      => 'club-member',
    // 'order' => 'DESC',
    'posts_per_page' => -1,
);

$club_members = get_posts( $args );

if ( $club_members ) {
    foreach ( $club_members as $post ) {
        setup_postdata( $post );

        $post_title = $post->post_title;
        $region     = get_field( 'region' );
        // ACF

        ?>
        <h3><?php echo $post_title; ?></h3>
        <?php
    }
    wp_reset_postdata();
}
?>

In the end, I should get something like this:

<h1>Region (with associated members)</h1>
<h3>Club member title</h3>
<h3>Club member title</h3>
<h3>Club member title</h3>
<h3>Club member title</h3>

<h1>Region (with associated members)</h1>
<h3>Club member title</h3>
<h3>Club member title</h3>
<h3>Club member title</h3>
<h3>Club member title</h3>

Note: the value of the field "region" is dynamic and should be only printed once and grouped underneath all the posts sharing the same field value

Solution

check the documentation of ACF here, I added a new query on top to get all the regions which we loop through in the second query.

<?php 

// args
$args = array(
    'numberposts'   => -1,
    'post_type'     => 'club-member',
);
$regions = array(); 
$the_query = new WP_Query( $args ); 

 if( $the_query->have_posts() ): 
     while ( $the_query->have_posts() ) : $the_query->the_post(); 
        if(!in_array(get_field('region'), $regions)){
            array_push($regions, get_field('region'));
        }
     endwhile; 
    
 endif; 

 wp_reset_query(); 


$query = array(
    'post_type' => 'club-member',
    'meta_query' => array(
        'relation' => 'OR'
    )
);

foreach($regions as $region) {
    array_push($query['meta_query'], array(
        'key' => 'region',
        'value' => $region,
        'compare' => 'LIKE'
    ));
} 
   
$the_query = new WP_Query( $args );

?>
<?php if( $the_query->have_posts() ): ?>
<ul>
    <?php while ( $the_query->have_posts() ) : $the_query->the_post(); ?>
    <?php $region =  get_field('region'); ?>
    <?php if (in_array($region, $regions)) { ?>
    <h1>
        <?php
            echo(get_field('region')); 
            $index = array_search($region, $regions);
            if($index !== FALSE){
                unset($regions[$index]);
            }
        ?>
    </h1>
    <?php } ?>
    <li>
        <a href="<?php the_permalink(); ?>"><?php the_title(); ?></a>
    </li>
    <?php endwhile; ?>
</ul>
<?php endif; ?>

<?php wp_reset_query();  ?>