Crypto casinos let players use digital currencies, so you control your wallet...

https://magic-wiki.win/index.php/Is_My_Crypto_Casino_Balance_Protected_Like_Money_in_a_Bank%3F

Crypto casinos let players use digital currencies, so you control your wallet and private keys, meaning you’re responsible for your funds. Traditional online casinos use regular money, where your deposited £20 stays as £20 without conversion