Not all CRM systems work on this principle. Many are made only to automate the sales process and track how employees communicate with customers.
I found a good CRM system that will definitely suit you, because all third-party applications can be connected via API. Take advantage of this free CRM system
https://fridaycrm.com/ you can optimize your business with it. All sales will go automatically, if a customer has already bought something from you, you will immediately show the customer's card and contacts and much more