Custom search with WP_Query

I know that to list podcasts we have shortcodes, but I need to make a page. So I created the code below, but it doesn’t work.

$args = [
‘post_type’ => ‘podcast’,
‘posts_per_page’ => 2,
‘paged’ => $page,
‘category_name’ => $category,
];

$podcasts = new WP_Query($args);

By chance, the only way to list podcasts is with shortcodes, you can’t create my own personalized listing? I will be very grateful if someone can help me.