Wordpress - Split gallery from post content

wp_split_gallery.php

 <?php

    if ( get_post_gallery() ) : ?>

   

    <div class="gallery-wrapper">

      <?php // build slider structure ?>

      <div class=" slider-wrapper">
        

        <div class="slick-simple">
      
    <?php
      $gallery = get_post_gallery( get_the_ID(), false );
      // get gallery images ids
      $gids = explode( ",", $gallery['ids'] ); 

      
      /* Loop through all the image and output them one by one */

     foreach( $gallery['src'] as $index => $src ){
        ?>
        
        <div class="slide-wrapper align-center">
          <img src="<?php echo $src; ?>" class="slide-image" alt="Gallery image" />
          <p class="slide-caption"><?php echo( get_post_field('post_excerpt', (int)$gids[$index] )); ?></p>
        </div>
        
        <?php
     } ?>

        </div>
      </div>
    </div>

    <div class="content-without-gallery">
      <div class="post-text-content">
        <h4 class="page_excerpt"><?php the_excerpt(); ?></h4>
        <p><?php  echo wpautop( strip_shortcodes( get_the_content() ) ) ?></p>
      </div>
    </div>

    <?php
     
      else :  // if no gallery
      ?>

      <section class="content-without-gallery">
        <div class="post-text-content">
          <h4 class="page_excerpt"><?php the_excerpt(); ?></h4>
          <?php the_content(); ?>
        </div>
      </section>


    <?php

    endif;
  ?>