WordPress Frontpage blog list pagination. How to use pagination with WP_Query.

template-home.php

<?php
/**
 * Template Name: Homepage
*/

get_header();

// since this is the Front-Page we need to use "page" instead of "paged"
$paged = ( get_query_var( 'page' ) ) ? get_query_var( 'page' ) : 1;
$args = array(
    "posts_per_page" => 6,
    "post_type" => "post",
    "post_status" => "publish",
    "paged" => $paged
);
$post_query = new WP_Query($args);
?>

<main id="primary" class="site-main">
    <section class="home-page">
        <div class="hero">
            <!-- add page hero -->
        </div>

        <div class="page-content">
            <?php while( $post_query->have_posts() ){
                $post_query->the_post();
                get_template_part( 'template-parts/content', get_post_type() );
            } ?>
            <div class="pagination-container">
                <?php
                // Yoink: https://wordpress.stackexchange.com/a/254200
                echo paginate_links( array(
                    'base'         => str_replace( 999999999, '%#%', esc_url( get_pagenum_link( 999999999 ) ) ),
                    'total'        => $post_query->max_num_pages,
                    'current'      => max( 1, get_query_var( 'page' ) ),
                    'format'       => '?paged=%#%',
                    'show_all'     => false,
                    'type'         => 'plain',
                    'end_size'     => 2,
                    'mid_size'     => 1,
                    'prev_next'    => true,
                    'prev_text'    => sprintf( '<i></i> %1$s', __( 'Newer Posts', 'text-domain' ) ),
                    'next_text'    => sprintf( '%1$s <i></i>', __( 'Older Posts', 'text-domain' ) ),
                    'add_args'     => false,
                    'add_fragment' => '',
                ) );
                ?>
            </div>
            <?php wp_reset_postdata(); ?>
        </div>
    </section>

</main>

<?php
get_footer();