Laissez Faire

Good afternoon, Laissez Faire!
Can you please tell me through whom I can trade on the exchange?
- PROP
- broker
- rent a seat on the exchange
- something else...

- PROP is bad;
- Broker - not all open an account for clients from my country (Ukraine);
- direct rent of a place on the exchange - I don't know what it is and whether it exists at all;

Please advise me.

Thank you for the answer.