$args = array(
    'orderby' => 'title',
    'order' => 'ASC',
);
$q = new WP_Query($args);
var_dump($q->request);
var_dump(wp_list_pluck($q->posts,'post_title'));

add_action(
  'pre_get_posts',
  function ($qry) {
    if ($qry->is_main_query()) {
      $qry->set('orderby','title');
    }
  }
);