How to add link to next post in post type?

Question

WordPress

I created the register_post_type() post type. I
need to display a link to the next post on the full page of the post,
how to display it?
Didn't find anything like this on google.

Answer 1

Use next_post_link()orget_next_post_link()

Answer 2

I bet so so so

<?php next_post_link('<strong>%link</strong>'); ?>
<?php get_next_post_link('<strong>%link</strong>'); ?>

outputs nothing