Creating pagination on custom templates

pagination.php

<section class="news-list" data-aos-offset="0" data-aos-delay="2500"
             data-aos="fade" data-aos-duration="1500">
        <div class="news-list-mixer">

			<?php
			$paged        = get_query_var( 'paged' ) ? absint( get_query_var( 'paged' ) ) : 1;
			$query_args   = array(
				'post_type'      => 'news',
				'order'          => 'DESC',
				'paged'          => $paged,
				'posts_per_page' => 10,
				'orderby'        => 'date'
			);
			$custom_query = new WP_Query( $query_args );
			if ( $custom_query->have_posts() ) :
				while ( $custom_query->have_posts() ) : $custom_query->the_post(); ?>

                    <article class="news-block mix <?php $terms = get_the_terms( $post->ID, 'news_categories' );
					foreach ( $terms as $term ) {
						echo $term->slug . ' ';
					} ?>">
                        <div class="container">
                            <div class="row">

                                <div class="news-block_image text-center col-md-6">
									<?php $src = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'full', false ); ?>
                                    <img src="<?php echo $src[0]; ?>" alt="<?php the_title(); ?>">
                                </div>

                                <div class="news-block_content col-md-6">
                                    <div class="news-block_date mb-10 uppercase"><?php the_date( 'F j, Y' ); ?></div>

                                    <h3 class="news-block_title mb-20"><?php the_title(); ?></h3>

                                    <div class="news-block_text mb-25"><?php the_excerpt(); ?></div>

                                    <a href="<?php the_permalink(); ?>" class="btn btn-dark btn-low">Read
                                        More</a>
                                </div>

                            </div>
                        </div>
                    </article>

				<?php endwhile; endif; ?>
			<?php wp_reset_postdata(); ?>
        </div>

        <div class="container">
            <div class="pagination d-flex">

				<?php
				$big = 999999999;
				echo paginate_links( array(
					'base'      => str_replace( $big, '%#%', esc_url( get_pagenum_link( $big ) ) ),
					'format'    => '?paged=%#%',
					'current'   => max( 1, get_query_var( 'paged' ) ),
					'total'     => $custom_query->max_num_pages,
					'mid_size'  => 5,
					'prev_text' => __( 'Previous Page' ),
					'next_text' => __( 'Next Page' ),
					'type'      => 'plain'
				) ); ?>

            </div>
        </div>

    </section>