You would need to create a custom post type by adding this code to your functions.php file (only do this if you are comfortable with editing theme files if not you should use a plugin such as “Custom Post Type UI”):
function custom_post_type() {
$labels = array(
'name' => 'Articles',
'singular_name' => 'Article',
'add_new' => 'Add New',
'add_new_item' => 'Add New Article',
'edit_item' => 'Edit Article',
'new_item' => 'New Article',
'view_item' => 'View Article',
'search_items' => 'Search Articles',
'not_found' => 'No Articles found',
'not_found_in_trash' => 'No Articles found in Trash',
'parent_item_colon' => '',
'menu_name' => 'Articles'
);
$args = array(
'labels' => $labels,
'public' => true,
'has_archive' => true,
'publicly_queryable' => true,
'query_var' => true,
'rewrite' => array('slug' => 'articles'),
'capability_type' => 'post',
'hierarchical' => false,
'supports' => array(
'title',
'editor',
'thumbnail',
'excerpt',
'custom-fields'
),
'menu_position' => 5,
'exclude_from_search' => false
);
register_post_type('articles', $args);
}
add_action('init', 'custom_post_type');
This is just an example and you should edit the options in the function to what you need from the custom post type. You can refer to WordPress documentation : https://developer.wordpress.org/plugins/post-types/registering-custom-post-types/