source: astra/3.6.4/comments.php

<?php
/**
 * The template for displaying comments.
 *
 * This is the template that displays the area of the page that contains both the current comments
 * and the comment form.
 *
 * @link https://codex.wordpress.org/Template_Hierarchy
 *
 * @package Astra
 * @since 1.0.0
 */

if ( ! defined( 'ABSPATH' ) ) {
        exit; // Exit if accessed directly.
}

/*
 * If the current post is protected by a password and
 * the visitor has not yet entered the password we will
 * return early without loading the comments.
 */
if ( post_password_required() ) {
        return;
}
?>

<div id="comments" class="comments-area">

        <?php astra_comments_before(); ?>

        <?php 
        if ( have_comments() ) : 
                astra_markup_open( 'comment-count-wrapper' ); 
                ?>
                        <h3 class="comments-title">
                                <?php
                                $comments_title = apply_filters(
                                        'astra_comment_form_title',
                                        sprintf( // WPCS: XSS OK.
                                                /* translators: 1: number of comments */
                                                esc_html( _nx( '%1$s thought on &ldquo;%2$s&rdquo;', '%1$s thoughts on &ldquo;%2$s&rdquo;', get_comments_number(), 'comments title', 'astra' ) ),
                                                number_format_i18n( get_comments_number() ),
                                                get_the_title()
                                        )
                                );

                                echo esc_html( $comments_title );
                                ?>
                        </h3>
                <?php 
                astra_markup_close( 'comment-count-wrapper' );
                if ( get_comment_pages_count() > 1 && get_option( 'page_comments' ) ) : 
                        ?>
                <nav id="comment-nav-above" class="navigation comment-navigation" aria-label="<?php esc_attr_e( 'Comments Navigation', 'astra' ); ?>">
                        <h3 class="screen-reader-text"><?php echo esc_html( astra_default_strings( 'string-comment-navigation-next', false ) ); ?></h3>
                        <div class="nav-links">

                                <div class="nav-previous"><?php previous_comments_link( astra_default_strings( 'string-comment-navigation-previous', false ) ); ?></div>
                                <div class="nav-next"><?php next_comments_link( astra_default_strings( 'string-comment-navigation-next', false ) ); ?></div>

                        </div><!-- .nav-links -->
                </nav><!-- #comment-nav-above -->
                <?php endif; ?>

                <ol class="ast-comment-list">
                        <?php
                        wp_list_comments(
                                array(
                                        'callback' => 'astra_theme_comment',
                                        'style'    => 'ol',
                                )
                        );
                        ?>
                </ol><!-- .ast-comment-list -->

                <?php if ( get_comment_pages_count() > 1 && get_option( 'page_comments' ) ) : ?>
                <nav id="comment-nav-below" class="navigation comment-navigation" aria-label="<?php esc_attr_e( 'Comments Navigation', 'astra' ); ?>">
                        <h3 class="screen-reader-text"><?php echo esc_html( astra_default_strings( 'string-comment-navigation-next', false ) ); ?></h3>
                        <div class="nav-links">

                                <div class="nav-previous"><?php previous_comments_link( astra_default_strings( 'string-comment-navigation-previous', false ) ); ?></div>
                                <div class="nav-next"><?php next_comments_link( astra_default_strings( 'string-comment-navigation-next', false ) ); ?></div>

                        </div><!-- .nav-links -->
                </nav><!-- #comment-nav-below -->
                <?php endif; ?>

        <?php endif; ?>

        <?php
                // If comments are closed and there are comments, let's leave a little note, shall we?
        if ( ! comments_open() && get_comments_number() && post_type_supports( get_post_type(), 'comments' ) ) :
                ?>
                <p class="no-comments"><?php echo esc_html( astra_default_strings( 'string-comment-closed', false ) ); ?></p>
        <?php endif; ?>

        <?php comment_form(); ?>

        <?php astra_comments_after(); ?>

</div><!-- #comments -->