Enable comments for custom template page

We use careerfy theme WordPress which is a system for a job board.

I would like to enable comments for each job post page, these pages are not listed on the WordPress admin panel, I can access it via child theme only, in this path: (wp-content/themes/careerfy-child-theme/wp-jobsearch/detail-pages/job/view3-job.php)

I have tried to add a shortcode but it seems not working.