Crypto casinos let you play using cryptocurrencies and require you to manage...

https://wiki-fusion.win/index.php/Is_It_Normal_to_Have_to_Move_Funds_from_Exchange_to_Wallet_to_Casino%3F

Crypto casinos let you play using cryptocurrencies and require you to manage your own wallet and private keys. Traditional online casinos use regular money, so your £20 deposit stays as £20 without worrying about crypto price changes