As far as I know bitcoinbetting.website is the only site that offers 0% house edge. Other sites that do so probably are scams. Although bitcoinbetting.website offers 0% house edge you cannot choose your odds... You can only go 16x or nothing, which is not as good as say, choosing 1.1x for this bet and 20x for the next one. But either way, 0% is definitely an attraction.
All site owners need to make profits for them and they are not doing any charity work to distribute money to gamblers so even though it is 0% house edge they have to come up with some limitations for gamblers so that they can make money in the end. Gambling for earning money is not a good option instead go for some investments.