If you need your snippet to load at a specific point in the WordPress load order, wrap your snippet code in an add_action hook.
For example, to load a snippet when the page footer is loaded, you could use the wp_footer hook:
add_action( 'wp_footer', function () {
// code here
} );You can read more about action hooks in the WordPress Code Reference and see a full list in the WordPress Codex.
Here are some common examples:
after_setup_theme– just after the theme is loadedinit– after WordPress has loaded, but before any content has loadedwp_head– in the site<head>section, where scripts and styles are outputwp_body_open– just after the opening<body>tagwp_footer– just before the closing</body>tag