Previous button is not showing in Quizzes

Hi Wahida, you are using the WP Pagination feature, which forces new pages/page reloads. Because of this, any kind of “previous” functionality is not possible, as it would erase all the answers of the current page.

The only advantage to using WP Pagination is that because it loads literal new pages, you can show new ads to your users. But it doesn’t look like you are even using ads on your site, so in my opinion, I think it would be best if you stopped using WP Pagination, and instead use the recommend Paginate setting that can be found when editing any question.