How to delete customer's addresses in DB (community store)

Using Concrete / Help
1

Can anyone help please with deleting customer names/addresses and orders from DB in communitystore (ConcreteCMS V5.5.6)? – I know it’s old –
Customers are not allowed to set up an account - only ordering as guests.
I have searched the DB in phpMyAdmin for last names and found three tables

  1. “atDefault” – where the specific name comes up in the search but I then cannot find where the names are stored in general there
  2. “CommunityStoreOrderSearchIndexAttributes”
  3. “Logs” (this is mainly email addresses logged when sending out messages

I deleted the addresses I found in “CommunityStoreOrderSearchIndexAttributes” but still the backend shows all the orders with addresses.
I do want to reduce personal data being hold in the system but how can I achieve that please?
Many thanks for any help
Stephan