pagination not show on wordpress page

Here is my full page code ,i can't fix this , anyone please help .

<?php
/*
Template Name: Gallery
*/
?>
<?php get_header(); ?>
<center><?php include('adsup.php'); ?></center>
<div class="mainw"><div class="main l170">
<h1><?php _e('Recently Added Free indian Photos', 'mytheme'); ?></span></h1>

    <?php query_posts(array('posts_per_page' => 21, 'post_type' => 'gallery', 'order' => 'DESC', 'ignore_sticky_posts' => 'true', 'paged' => ( get_query_var('paged') ? get_query_var('paged') : 1 ), )); ?>
        <?php if ( have_posts() ) : ?>
<ul class="listThumbs">
<?php if (get_option('mtn_adsindex') <> '') { ?>
<li class="adsRight">
<?php echo stripslashes(get_option('mtn_adsindex')); ?>
</li>
  <?php } else { ?>
<?php } ?>
<?php while ( have_posts() ) : the_post(); ?>
<li class="thumi">
<a href="<?php the_permalink() ?>" title="<?php the_title_attribute(); ?>">
<img src="<?php echo get_post_meta($post->ID, 'thumb', true); ?>" alt="<?php the_title_attribute(); ?>" style=" height:235px;> </a>
<span class="scrub"><span></span></span></a>
<a href="<?php the_permalink(); ?>" class="title" rel="bookmark"><?php if (strlen($post->post_title) > 40) {
echo substr(the_title($before = '', $after = '', FALSE), 0, 45) . '...'; } else {
the_title();
} ?></a>
<span class="added">
<?php if(function_exists('the_views')) { the_views(); } ?>&nbsp;views
</span><span class="rating"><?php echo time_ago(); ?></span>
</li>
<?php
endwhile;
wp_reset_query();
?>
</ul>
        <?php else : ?>

            <p><?php _e('No Photos Found', 'mytheme'); ?></p>

        <?php endif; ?>
<div class="navigation"><?php if (function_exists("pagination")) {
pagination($additional_loop->max_num_pages);
} ?></div>
</div>
</div>
<?php include (TEMPLATEPATH . '/galleryside.php'); ?>
<center>
<?php include('adsfoot.php'); ?>
<p>
<div class="foot2">
<?php get_search_form(); ?>
</div>
<p>
<div class="foot2">
<?php include('footads.php'); ?>
</div>
</center>
<?php get_footer(); ?>

PHP:

 

I am not sure, but this may work for you...
just an idea
if( $attribute['pagination']==true){

$pagination_n .='<div class="col-md-12">';

/*
* Remember to set our maximum pages for the custom query*/if( function_exists('n_pagination')){

$pagination_n .=n_pagination( $q->max_num_pages );

}else{

$pagination_n .= get_next_posts_link('&laquo;&laquo; Older Posts', $q->max_num_pages );
$pagination_n .= get_previous_posts_link('Newer Posts &raquo;&raquo;');

}

$pagination_n .='</div>';

 

I think it works out try to use a custom pagination plugin like https://wordpress.org/plugins/wp-paginate/

 

or try this plugins is the best https://wordpress.org/plugins/wp-pagenavi/