We do not build anything into the theme to handle Facebook Pixel or Google Analytics. Shopify has added the ability in the admin to avoid inserting any code inside the theme so we highly suggest doing this through this link.
Shopify admin > Online Store > Preferences. More information on adding this can be found here through this link.
If you are using this method and your tracking is not working, see suggest reaching out to Shopify support since this is an admin related issue and not a theme one.
They have 24/7 support through Phone / Email / Chat and you can contact them through this link.