Exclude products from search results in WordPress

functions.php

function exclude_products_from_search($query) {
    if (is_admin() || !$query->is_main_query()) {
        return;
    }

    if ($query->is_search) {
        $query->set('post_type', array('post', 'page')); // Exclude products from search results
    }
}

add_action('pre_get_posts', 'exclude_products_from_search');