WP custom field repeater advanced

<div class="tables">
        <div class="tables-col ac">

            <?php if ( have_posts() ) : query_posts( 'cat=4'); while (have_posts()) : the_post(); ?>
            <div class="table <?php $tag = get_field('tag');
            echo $tag?>">

                <div class="swiper-container gallery-top">
                    <div class="swiper-wrapper">
                        <?php if (have_rows('imgs')): ?>

                        <?php while (have_rows('imgs')): the_row();

                        $img = get_sub_field('image'); ?>

                        <div class="swiper-slide"><a href="<?php
                            echo $img['url']; ?>" data-fancybox="<?php $tag = get_field('tag');
                            echo $tag?>">
                                <img class="table-img" src="<?php
                                echo $img['url']; ?>" alt="<?php the_title(); ?>" />
                            </a></div>

                            <?php endwhile; ?>

                        <?php endif; ?>
                    </div>
                </div>
                <div class="swiper-container gallery-thumbs">
                    <div class="swiper-wrapper">

                        <?php if (have_rows('imgs')): ?>

                        <?php while (have_rows('imgs')): the_row();

                        $img = get_sub_field('image'); ?>

                        <div class="swiper-slide" style="background-image:url(<?php
                        echo $img['url']; ?>)"></div>

                            <?php endwhile; ?>

                        <?php endif; ?>
                    </div>

                    </div>

                    <div class="table-descr">
                        <h3><?php the_title(); ?></h3>
                        <p><?php the_content(); ?></p>
                        <a href="<?php echo get_permalink(get_page_by_title('inquiries/contact'))?>">Inquire</a>
                    </div>
                </div>

            <?php endwhile; endif; wp_reset_query(); ?>

            </div>
    </div>