Advice needed on how to recover money not transferred via Google Pay to a Polish bank

I have been defrauded through Google Pay to transfer a bank to bank to a Polish bank called Millenium Bank in Warszawa. What can I do to recover my money. I have reported it to the Police here in UK. My bank Barclays Bank would not help they said I was a willing participant. Can anyone advice me?

How much have you lost? If it's under the limit for the small claims court, I'd tell Barclays that they'll be needing to prove in court their claim about being a willing participant.

BTW, credit cards are always the things to use for online transactions.

£3600. I do not have a credit card.

If you were a willing participant it will be difficult to get any redress from Millenium - they have done nothing wrong. You could try the polish police

So apply for one, so you have next time.