pr_product_query_tax_query.php

<?php 
/**
 * Hide products from specific category on shop page
 * Update line 13 with category slugs to hide
 */
function pr_product_query_tax_query( $tax_query, $query ) {

  if( ! is_shop() ) return $tax_query;

  $tax_query[] = array(
    'taxonomy'  => 'product_cat',
    'field'     => 'slug',
    'terms'     => array( 'hoodies' ); // Update slugs here
    'operator'  => 'NOT IN',
  );

  return $tax_query;
}
add_filter( 'woocommerce_product_query_tax_query', 'pr_product_query_tax_query', 10, 2 );