[Theme: Brunelleschi] Change "Older posts" "Newer posts" to numbers (pagination)

Try it with a plugin: https://www.ads-software.com/extend/plugins/wp-pagenavi/

This theme uses next_posts_link()

Take a look at replacing it with paginate_links() if you don’t want to use a plugin. To replace it, you will need to create a child theme and then add a new loop.php, with the lines shown below replaced with paginate_links(etc).

<div class="nav-previous"><?php next_posts_link( __( '<span class="meta-nav">&larr;</span> Older posts', 'brunelleschi' ) ); ?></div>
		<div class="nav-next"><?php previous_posts_link( __( 'Newer posts <span class="meta-nav">&rarr;</span>', 'brunelleschi' ) ); ?></div>