events list outside plugin shows exactly the count u want

I’ve tried so many query calls and solutions from this forum. Nothing seems to work for me. With the RSS-Feed can i get the desired results:

<ul>
      <?php
include_once(ABSPATH.WPINC.'/rss.php'); // path to include script
$feed = fetch_rss('https://url/to/events/feed'); // specify feed url
$items = array_slice($feed->items, 0, 6); // specify first and last item
?>
      <?php if (!empty($items)) : ?>
      <?php foreach ($items as $item) : ?>
      <li>
        <a href="<?php echo $item['link']; ?>" target="_blank"><?php echo $item['title']; ?></a>
      </li>
      <?php endforeach; ?>
      <?php endif; ?>
    </ul>