Add tracking code only in woocommerce order received page

functions.php

/**
 * Add tracking code on Order received/thank you page.
 *
 * @return void
 */
function md_thankyou_page_tracking_code() {
	if ( ! is_wc_endpoint_url( 'order-received' ) ) {
		return;
	}
	?>
<!-- Event snippet for Purchase (1) conversion page -->

<script>
  gtag('event', 'conversion', {
      'send_to': 'AW-000000000/000000000_000000000',
      'value': 1.0,
      'currency': 'GBP',
      'transaction_id': ''
  });
</script>
	<?php
}
add_action( 'wp_footer', 'md_thankyou_page_tracking_code' );