How do I list comments for the current post?

I’m creating a custom theme. Within that theme I am creating a single.php.
On that single I have a comments form that takes comments.

However, I haven’t been able to list comments that have been submitted and accepted by the admin.

So far I’ve tried both wp_lists_comments and get_comments. I’ve tried them both inside and outside the loop. Neither of these functions return anything.

Here is my existing code:
https://pastie.org/6623260

In this snippet I’m using ‘get_comments’. I’ve also used wp_list_comments() in the exact same position.

What am I doing wrong? How do actually get the comments?