Hide a product from WooCommerce main shop page

 function custom_pre_get_posts_query( $q ) {

    $tax_query = (array) $q->get( 'tax_query' );

    $tax_query[] = array(

           'taxonomy' => 'product_cat',

           'field' => 'slug',

           'terms' => array( 'buster' ), // Don't display products in the clothing category on the shop page.

           'operator' => 'NOT IN'

    );

    if(is_shop()){

    $q->set( 'tax_query', $tax_query );

  }else{

    return;

  }

    

}

add_action( 'woocommerce_product_query', 'custom_pre_get_posts_query' );