Wordpress - Figure out how to display "MetaTitle & MetaDescription" and how to customise the display of wp_query result page

I recently created a custom plugin to show archive page of combination of 2 custom taxonomies using wp_query. This also creates a specific url to display the results loop. Here is the main part of the function, but i have attached the full plugin: $wp_query = new WP_Query([ 'post_type' => 'listing', 'paged' => $paged, 'tax_query' => array( 'relation' => 'AND', array( 'taxonomy' => 'listing_category', 'field' => 'slug', 'terms' => $matches[1], ), array( 'taxonomy' => 'region', 'field' => 'slug', 'terms' => $matches[2], ), ), ]); Part 1 of requirements: The results page displays fine, but for some reason is showing as a 404 page in the meta title and meta data. I want to show meta data based on the combined taxonomy results, e.g. if the results page is for hotels & london, then we have metatitle of "Hotels in London" Part 2 of requirements: I also want to display some text at the top of the results page, for example in <h1> tag. e.g "Hotels in London" Part 3: If the result is empty, i would like to show a custom message on the page, e.g. "there are no hotels in london, sorry"