I've been playing in an online casino and I have $300 I can withdraw but the only way to cash it out is through Bitcoin.
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How do I withdraw from that casino? I now have no wallet. And I dont know the best way to proceed.
Any help/advice?
For withdrawing funds from the casino, as others suggested download Electrum and create a bitcoin wallet. And if you want to cash out your bitcoins, you can use a P2P exchange like localcryptos.com and get the cash directly to your bank account or other payment methods.