Question to the community. I managed to expose all customer data of a well-funded D2C brand and when I reached out to them I did not ask for bounty before I sha

Question to the community. I managed to expose all customer data of a well-funded D2C brand and when I reached out to them I did not ask for bounty before I shared the fix/the security hole. I only got a 200 USD gift card for their shop :D What is best practice here? Do you first tell the company that they have a security issue, ask for bounty and then help? Is that unethical? Blackmail?