You have to provide payment options for customers so that they can also select their preferred option in the checkout page.
Click "Settings" > "Payment Options"
Click “Add” to add the first payment option > Fill in the fields in the new page
You may set up payment methods such as Bank Transfer, Cash on Delivery, PayPal, Stripe, Alipay, ECPay, O'Pay and LINE Pay etc., according to your region.
You can drag button to change the sequence of the payment options.
Click here to learn more about "Payment Settings"