How can I display my official Instagram account image in my site? I want to sync all my Instagram official images with my site automatically and not manually. Please help.

You can display your official Instagram account images in your site by embedding code widget. To do so, please refer the following link:
https://www.instagram.com/developer/embedding/ 

And to sync all your Instagram official images with your site automatically, you can add responsive widget for Instagram by using LightWidget. Please refer the following link to use LightWidget:
https://lightwidget.com/