wp_enqueue_script in the footer
By default WordPress default JavaScripts won’t move to the footer, a workaround is to add its path :
wp_enqueue_script('jquery','/wp-includes/js/jquery/jquery.js','','',true);
Make sure you have the wp_footer() right before the </body> tag. See the $in_footer parameter for more info. You also need to call this before wp_head has run. Try also using this action.
add_action('wp_enqueue_scripts', 'add_scripts_to_pages');Another thing to try is using NULL as 3rd and 4th parameters.
As an addition to @Nick's answer;
if you have a PHP problem before wp_footer() you wont be able to see your script in footer. Source is https://wordpress.org/support/topic/enqueuing-scripts-in-footer-does-not-working-with-wordpress-36.