How to loop related posts by tags

<?php

$tags = wp_get_post_tags($post->ID);

if ($tags) {
    
    echo '<h3>Kapcsolódó bejegyzések</h3>';
    
    $first_tag = $tags[0]->term_id;
    
    $args=array(
        'tag__in' => array($first_tag),
        'post__not_in' => array($post->ID),
        'posts_per_page'=>5,
        'caller_get_posts'=>1
    );
    
    $my_query = new WP_Query($args); ?>
    
    <div class="row">
    
    <?php if( $my_query->have_posts() ) { while ($my_query->have_posts()) : $my_query->the_post(); ?>
        
        <div class="col-md-4">
            <div class="card">
                     <div class="item-hover circle effect13 top_to_bottom">
                         <a href="<?php the_permalink(); ?>">
                              <div class="card-body">
                                <h3 class="card-title"><?php the_title(); ?></h3>
                                <p class="readmore"><i class="fas fa-angle-right"></i> <?php include('translate/tovabb.php'); ?></p>
                              </div>
                              <div class="info">
                                    <div class="info-back home-posts">
                                        <h3 class="label"><?php the_title(); ?></h3>
                                        <p class="readmore-postsback"><i class="fas fa-angle-right"></i><?php include('translate/tovabb.php'); ?></p>
                                    </div>
                              </div>
                      </a>
                    </div>
                </div>
            </div>

    <?php
    endwhile;
    }
    ?>
    </div>
    <?php
    wp_reset_query();
}
?>