If I understand you right, it sounds like you previously received a payment on your wallet. Let’s call this transaction A. When trying to receive a second payment, you accidentally gave the address of an input from transaction A instead of your own receive address, and the payer in the second payment paid the address you indicated.
You could try to reach out to the party that paid you in transaction A. If they directly control the funds, they may be able to return them to you. If the sender in transaction A used some custodial wallet, the address may be associated with a completely different user, though. If so, possibly the service could help, but more likely, it would be unrecoverable.
