I’ve been building the shop on Shopify for 1 month, but I don’t know how to make a credit card payment in my store. PayPal is not enough. It is mandatory to set up a payment provider or Shopify has its own option because that would be good.
Here is the information from Shopify Help pages on Shopify Payments:
If Shopify Payments is not supported for your country you would need to set up a different payment processor.