I have check several sites like Bitvest, Stake, Duelbits, Sicodice, Crypto games, and Bustadice, unfortunately the house edge of these sites is 1%. Crypto games was used to be 0.8% and they also have 0.4% house edge promotion for VIP members, but I'm not sure how about now.
Probably new casinos offer lower than 1%, but the risk is on you.
I think on dice, the standard is 1%, as that’s the percentage we see in most reputable casinos. There are probably some casinos offering lower odds, but since it’s not standard, you’re right, the risk is high, and as a gambler, you might face problems withdrawing your money in the future.
Crypto games was used to be 0.8% and they also have 0.4% house edge promotion for VIP members, but I'm not sure how about now.
this promotion is only for dice games(just in case someone thinks it's for every game).
OP only asked about this particualar game ( dice ), so that answers the question.