Connecting payment systems to the landing page without registration?

Question

Payment systems

How can I connect Yandex payment systems, bank cards, without registering such as robokassa and the like?
Friends shout that you can connect payment systems without registering in any robocash, etc., just connect the script to the page and that’s it, and of course they sent me to the Internet to look for how to do this, but alas, I didn’t find anything like that.

Answer 1

How do you plan to receive funds without registering accounts in payment systems where funds will be received?
Even if you find such a script that is enough to connect to the page and accept payments, then ... I have bad news for you: in any case, the script will contain someone's details for accepting payments