It sounds like you want to add your featured image above the post title, then? This could be done by creating a child theme with some modified files, if you’re comfortable editing PHP, HTML, and CSS.
If you only want the featured image above the post title in single post view – like the page you linked above – then you’d want to add a copy of content-single.php to your child theme and make some edits to it to display the featured image.
Here’s the Codex reference for displaying featured images:
https://codex.www.ads-software.com/Function_Reference/the_post_thumbnail
You can start by adding something like this:
<?php
if ( has_post_thumbnail() ) { // check if the post has a Post Thumbnail assigned to it.
the_post_thumbnail();
}
?>
to content-single.php, where you’d like the featured image to appear, for example, just above line 8:
<header class="entry-header">
I haven’t tested this, but it should give you a start. There are lots more examples of how to implement a featured image thumbnail on the Codex page I linked above.
If you’re new to child themes, here are some guides:
https://codex.www.ads-software.com/Child_Themes
https://op111.net/53/
https://vimeo.com/49770088
That should get you started!