Why doesn't get_posts work inside a post?

Question

WordPress

Site on WordPress. I'm trying to display posts from a specific category. On the pages of archives (in headings)
the code works, but for some reason it doesn't work inside the post. Please tell me what is the problem? The code:

<?php
global $post;
$postslist = get_posts( array( 'posts_per_page' => 6, 'order'=> 'DESC', 'category' => 10, ) );
foreach ( $postslist as $post ){
setup_postdata($post);
?>
<li> 
  <aside> 
    <span class="roboto title">
      <a rel="bookmark" href="<?php the_permalink(); ?>"><?php the_title(); ?></a> 
    </span> 
    <small class="desc"><?php the_date(); ?></small> 
  </aside> 
</li> 
<?php
}
wp_reset_postdata();
?>

Answer 1

Try removing global $post; and change $post