Add comments title from my default theme

Hello, when installing the plugin it removes my default comment style. I want to keep the title of my comments.

This is the code that I want to keep, is it possible to add it somewhere?

	// You can start editing here -- including this comment!

	if ( have_comments() ) : ?>

		<h2 class="comments-title">

			<?php

			$comment_count = get_comments_number();

			if ( 1 === $comment_count ) {

				printf(

					/* translators: 1: title. */

					esc_html_e( 'One thought on &ldquo;%1$s&rdquo;', 'minimal-grid' ),

					'<span>' . get_the_title() . '</span>'

				);

			} else {

				printf( // WPCS: XSS OK.

					/* translators: 1: comment count number, 2: title. */

					esc_html( _nx( '%1$s thought on &ldquo;%2$s&rdquo;', '%1$s thoughts on &ldquo;%2$s&rdquo;', $comment_count, 'comments title', 'minimal-grid' ) ),

					number_format_i18n( $comment_count ),

					'<span>' . get_the_title() . '</span>'

				);

			}

			?>

		</h2><!-- .comments-title -->