Yes, it is placed automatically. But all plugins and themes use the wp_footer() call for that. WordPress enqueues the scripts, and prints them within the wp_footer() hook – it is extremely important.
I checked your theme in the editor, and it is missing, please make sure to include that – most plugins will not work properly without it.
I am also seeing some major script errors, I also recommend clearing them, as they might cause functionality problems: https://i.imgur.com/2YwXwpB.png
