Of course there is . there are gambling sites that are based on blockchain and they are decentralized . these kind of sites are more trusted than a non blockchain/centralized based gambling site but we are talking about gambling here and gambling will still be gambling no matter what platform/system it is based . luck will still matter in this in order for a person to win
It is a great idea to have a gambling platform that is completely based on blockchain and decentralized,,, but that does not exist today yet.
It is possible to have wallets all non custodial, meaning to say you connect your wallet and play/gamble at the site without them keeping your money, that is the best option to do for now. Then it does not matter if you trust the casino.