How to show the clicked category related posts on category detail page?

I have used a custom page using this code, these links redirect to Category detail page which showing Nothing Found. How can I show the clicked category related posts on category detail page? Note: I am using twentytwenty-child theme.

?php /* Template Name: Our Jobs */ ?
?php get_header(); ?


?php wp_list_categories(array(
    'parent'        =  '17',
    'show_option_all'    = '0',
    'orderby'            = 'name',
    'order'              = 'ASC',
    'style'              = 'list',
    'show_count'         = 1,
    'hide_empty'         = 1,
    'use_desc_for_title' = 0,
    'child_of'           = 0,
    'feed'               = '',
    'feed_type'          = '',
    'feed_image'         = '',
    'exclude'            = '',
    'exclude_tree'       = '',
    'include'            = '',
    'hierarchical'       = 0,
   'title_li'           = __( 'h2' . __( 'heading' ) . '/h2' ),
    'show_option_none'   = __( 'No categories' ),
    'number'             = null,
    'echo'               = 1,
    'depth'              = 0,
    'current_category'   = 0,
    'pad_counts'         = 0,
    'taxonomy'           = 'category',
    'walker'             = null
)); ?