Due to the irreversible nature of digital currency protocols, transactions can neither be cancelled nor reversed once sent. In this scenario, it would be necessary to contact the receiving party and seek their cooperation in returning the funds. If you do not know the owner of the address, there are no possible actions you can to take to retrieve the funds.
Because of this, it is essential to exercise caution when sending. It is always recommended that you double-check that the address you are sending to exactly matches the address of the recipient before sending.