Hello, the classic payment by card with the transfer of funds between the account of the buyer and the seller, through a secure processing center, is the safest way to transfer money using 3D-Secure and modern data encryption. But you can conclude an agreement with Internet acquiring only as a legal entity, and the execution itself takes more time. An easier option for online store owners is payment systems such as
https://payadmit.com/. Thus, you will also be able to accept payments from other countries.