Hide products of a category in the “all products” block in a certain page

I’m looking for a way to hide products of a specific categories (packs, liquor) on specific pages (Example: Hide packs and liquor in the “wines” page). I don ‘t want to hide them in my entire shop, only in the specified pages.

I searched and another user tried this code and worked for him, but unfortunaly doesnt work on my webpage.

add_action( 'woocommerce_product_query', 'prefix_custom_pre_get_posts_query' );
/**
 * Hide Product Cateories from targetted pages in WooCommerce
 * @link https://gist.github.com/stuartduff/bd149e81d80291a16d4d3968e68eb9f8#file-wc-exclude-product-category-from-shop-page-php
 *
 */
function prefix_custom_pre_get_posts_query( $q ) {
	
	if( is_page('wines') ) { // set conditions here
	    $tax_query = (array) $q->get( 'tax_query' );
	
	    $tax_query[] = array(
	           'taxonomy' => 'product_cat',
	           'field'    => 'slug',
	           'terms'    => array( 'packs, liquor' ), // set product categories here
	           'operator' => 'NOT IN'
	    );
	
	
	    $q->set( 'tax_query', $tax_query );
	}
}

What i am doing wrong?

Thanks in advance.

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