Withdrawals  from online casinos doesn't hold  any special requirements  therefore you should always use  the wallet/s which you used to use in your everyday activities with bitcoin. My favorite wallets to use for crypto  gambling are Bitcoin Core and Electrum.  I prefer the desktop wallet of the  latter rather than its mobile variant because any mobile wallet is the threat to my privacy.  More on that is ^here TL;DR. Don't use mobile wallets for crypto wallets.