add_action('wp_enqueue_scripts', function () {
    wp_enqueue_style(
        'toh-google-fonts',
        'https://fonts.googleapis.com/css2?family=Libre+Caslon+Display&family=Libre+Caslon+Text:ital@0;1&family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,500;0,8..60,600;1,8..60,400;1,8..60,500&family=IBM+Plex+Mono:wght@400;500&display=swap',
        [],
        null
    );
}, 5);
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="https://theocculthealing.shop/wp-sitemap-index.xsl" ?>
<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"><sitemap><loc>https://theocculthealing.shop/wp-sitemap-users-1.xml</loc></sitemap></sitemapindex>