The plugin shortcodes not working in ajax call - wordpress

Question

I am using simple share buttons. I have two posts on the page and other posts are getting via button click by ajax. On the ajax loaded content, simple share buttons are not displayed. I am getting them via shortcode. What is wrong?
// Function.php
function true_load_posts(){
$args = unserialize(stripslashes($_POST['query']));
$args['paged'] = $_POST['page'] + 1; // one more post
$args['post_status'] = 'publish';
$q = new WP_Query($args); //Query
if( $q->have_posts() ):
while($q->have_posts()): $q->the_post();
?>
<article class="article" id="post-<?php the_ID(); ?>" <?php post_class(); ?>> // Article
<?php the_category( $post_id ); ?>
<div class="news-article">
<h2><?php the_title(); ?></h2> // headline post
<p class="author">By <span><?php echo get_the_author(); ?></span></p>
<div class="news-article__image"> // image article
<img src="<?php echo get_the_post_thumbnail_url(); ?>" alt="image">
</div>
<div class="inner-block">
<p class="excerpt"><?php $exs = get_the_excerpt(); print $exs;?></p>
read more // link
<div class="bottom-block flex align-center"> // some block
<p class="post-date"><?php the_time('F j, Y g:i a'); ?>// post date</p>
<p class="share-links"><?php echo do_shortcode('[do_widget id=ssba_widget-2]'); ?></p>// my sortcode
</div>
</div>
</div>
</article>
<?php
endwhile;
endif;
wp_reset_postdata();
die();
}
add_action('wp_ajax_loadmore', 'true_load_posts'); // hooks
add_action('wp_ajax_nopriv_loadmore', 'true_load_posts'); // hooks
// Script
$('#true_loadmore').click(function(){ //Button click
$(this).text('Loading...'); // button text
var data = {
'action': 'loadmore',
'query': true_posts,
'page' : current_page
};
$.ajax({ // ajax call
url:ajaxurl,
data:data,
type:'POST',
success:function(data){
if( data ) {
$('#true_loadmore').text('Load more').before(data);
current_page++;
if (current_page == max_pages) $("#true_loadmore").remove();
} else {
$('#true_loadmore').remove();
}
}
})
});
Maybe i should use some code for using shortcodes in ajax? I tried to use wp_localize_script but it doesnt work.