WordPress custom post type WP_Query on front_page.php with working pagination

gistfile1.php

<?php $paged = ( get_query_var('page') ) ? get_query_var('page') : 1; ?>
<?php $gallery_args = array(
  'paged' => $paged,
  'post_type' => 'gallery',
  'posts_per_page' => 1
); ?>

<?php $gallery_query = new WP_Query( $gallery_args ); ?>

<?php // Pagination fix
$temp_query = $wp_query;
$wp_query   = NULL;
$wp_query   = $gallery_query; ?>

<div>
  <?php if( $gallery_query->have_posts() ) : ?>
    <?php while( $gallery_query->have_posts() ) : $gallery_query->the_post(); ?>
      
    <?php //loop content here ?>
    
    <?php endwhile; ?>
  <?php endif; ?>
  
  <?php if ($gallery_query->max_num_pages > 1) : ?>
    <nav class="prev-next-posts">
      <div class="prev-posts-link">
        <?php echo get_next_posts_link( 'Older Entries', $gallery_query->max_num_pages ); ?>
      </div>
      <div class="next-posts-link">
        <?php echo get_previous_posts_link( 'Newer Entries' ); ?>
      </div>
    </nav>
  <?php endif; ?>
  
  <?php wp_reset_postdata(); ?>
  
  <?php $wp_query = NULL; ?>
  <?php $wp_query = $temp_query; ?>
</div>