Remove default pagination

Hi, I want a special pagination with more links.

With the help of Elements, I hooked in the right place (generate_after_main_content) to display my custom pagination :

<nav id="nav-below" class="paging-navigation">
<span class="screen-reader-text">Navigation des articles</span>
<?php the_posts_pagination( array(
    'mid_size'  => 5
) ); ?>
</nav>

Now I wand to disable the default theme pagination, what is the correct remove_action() to use for that ?

If there is a simple way to change mid_size on the default pagination that would even be better...

Thanks.