Looking to purchase smilar WordPress theme

Hi team,

I am looking to purchase one theme but unable to find same in Themeforest. Can someone please help me to find the Author or theme name.

Here is link to site where theme is working like a charm, https://www.couponnx.in/aws-certification-a-complete-guide-to-study-and-pass/

they have used a custom theme but you can collect quality theme from here

I am using this theme, you can also go through it,
A nice theme to try - https://themeforest.net/item/pergo-a-multipurpose-landing-page-wordpress-theme/22471103