drupal 9.1 + amp 8.3 theming

For my to be lauched drupal 9.1 website I need my product pages to be also displayed as amp pages.

This amp 3x pages are displaying but they more need css work as well as adding buttons and social footer.

My old drupal 8 site uses amp 8.1 which can be used as reference to complete the newer drupal amp 8.3 pages

If you know Drupal it should be simple to add 2 missing link buttons and social footer to the amp twig template.