add_action('init', function(){
    register_post_type('fizul_service', array(
        'label'=>'Services',
        'public'=>true,
        'show_in_menu'=>true,
        'supports'=>array('title','editor','thumbnail'),
        'has_archive'=>false
    ));
});
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="https://fizulislamllc.com/wp-sitemap-index.xsl" ?>
<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"><sitemap><loc>https://fizulislamllc.com/wp-sitemap-posts-post-1.xml</loc></sitemap><sitemap><loc>https://fizulislamllc.com/wp-sitemap-posts-page-1.xml</loc></sitemap><sitemap><loc>https://fizulislamllc.com/wp-sitemap-taxonomies-category-1.xml</loc></sitemap><sitemap><loc>https://fizulislamllc.com/wp-sitemap-users-1.xml</loc></sitemap></sitemapindex>