Hi and welcome in Poland, hope you will have a blast in here
Just in case nobody will be able to help you F2F.
There is an option to withdraw fiat from ATM using bitcoin.
As of today 6200 ATM's are supported. All Euronet ATM.
https://inpay.pl/atm/ unfortunately there is so English version of this site. [yet. I'm not the owner]
You simply add your phone, your address, amount of cash and inpay system will send you SMS, with codes for the Fiat from ATM. No credit card required, you dont have to signup with real name.
Fee is ~3% and maximum you can withdraw at once is around 0.5
BTCAfter
BTC confirmed at inpay, you will recive SMS and then you have 24hours to use the codes at any* ATM
This is how those ATMs look like*.
Here are places where you will find them in Warsaw