Can't purchase a item | Payment fail

I’m trying to purchase an item. but there show an error while I checkout.

Payment unsuccessful - there was a problem processing your credit card.
For security reasons, we may need you to re-enter your Visa, MasterCard or AMEX details before trying again, or you may need to try an alternative payment method.
**I have removed my card and re-enter my card details but it’s still failing **
Note: My card has enough balance to check out this item. there are no issue from bank or card

Hello.
why you cann’t payment via paypal? you can use paypal add your card visa, etc