There is no point in looking for a gambling site with 0% house edge, I doubt that you will find any and if you do it will be probably a scam attempt.These sites are businesses and their owners are looking to make profit not to give away their money,with 0% house edge they have no future and it is a matter of time until they go bankrupt,I suggest you to be very careful if you don't want to lose your money.
Oh thats a pretty strange question and i have never heard about any site like that which have 0% house edge.If that happens then gambling site cannot survive and will be in huge loss and gonna end up really soon.If there are then probably those are scam sites.
If ever there is a site that has 0% house edge would you trust them. Never seen a site that gives 0% house edge(except those gives promo of course). It would be better to play in a site that has house edge for me than nothing.
I don't think 0% house edge could give any advantage to players because gambling will remain risky and will have same risk factor like with little bigger odds, it's not possible for any owner of gambling to keep it running for long time without making any profit there.
May be, u can try the one in my sig... It is 0% house edge and bets are verified by blockchain.