To get just the related posts use ‘tribe_get_related_posts’. It accepts two parameters, the first one is the amount of posts and the second one is the event ID. Defaults are 3 posts and the current post ID. Once you get the posts you’ll need to loop those and output the info for each one, you can take a look at how that’s done in the related events template at ‘wp-content/plugins/events-calendar-pro/src/views/pro/related-events.php’.
Please let me know if this is what you were looking for,
Best,
Nico