function blog_scripts2() {
    // Register the script
    wp_register_script( 'custom-script2', get_stylesheet_directory_uri(). '/js/customjs2.js', array('jquery'), false, true );

    // Localize the script with new data
    $script_data_array = array(
        'ajaxurl' => admin_url( 'admin-ajax.php' ),
        'security' => wp_create_nonce( 'load_more_posts2' ),
    );
    wp_localize_script( 'custom-script2', 'blog2', $script_data_array );

    // Enqueued script with localized data.
    wp_enqueue_script( 'custom-script2' );
}
add_action( 'wp_enqueue_scripts', 'blog_scripts2' );



function load_posts_by_ajax_callback2() {
    check_ajax_referer('load_more_posts2', 'security');
    $paged = $_POST['page'];
    $args = array(
        'post_type' => 'galleryimages',
        'post_status' => 'publish',
        'posts_per_page' => '3',
        'order'=>'ASC',
        'paged' => $paged,
    );
    $my_posts = new WP_Query( $args );
    ?>

    <?php if ( $my_posts->have_posts() ) : ?>
        <?php while ( $my_posts->have_posts() ) : $my_posts->the_post(); ?>


            <div class="col-lg-4 col-md-6 col-sm-12 col-12 p-0"  data-aos="zoom-in" data-aos-duration="1500">
            <a href="<?php the_post_thumbnail_url();?>" class="lightbox">
                <?php the_post_thumbnail();?>
    </a>
            </div>
            <script src="https://cdnjs.cloudflare.com/ajax/libs/baguettebox.js/1.8.1/baguetteBox.min.js"></script>
    <script>
    baguetteBox.run('.tz-gallery');
    </script>


        <?php endwhile; ?>
        <?php
    endif;
    ?>
    <?php

    wp_die();

}
add_action('wp_ajax_load_posts_by_ajax2', 'load_posts_by_ajax_callback2');
add_action('wp_ajax_nopriv_load_posts_by_ajax2', 'load_posts_by_ajax_callback2');

////
js/custom-js.js
var page = 2;
jQuery(function($) {
    jQuery('body').on('click', '.loadmore2', function() {
        var data2 = {
            'action': 'load_posts_by_ajax2',
            'page': page,
            'security': blog2.security
        };

        $.post(blog2.ajaxurl, data2, function(response2) {
             if(response2 != '') {
                 jQuery('.roww').append(response2);
                page++;
             } else {
                 jQuery('.loadmore2').hide();
             }

        });
    });
});