Anyone can say and give a site that is trusted even me, so it is better if you will sight your explanation about the sites you are endorsing so that people will do believe in you with a basis.
I think you can find the kind of sites that provide you good opportunity to make money and maybe win at times and enjoy in the same time but there might not be a site that would be fully trusted and fair because in the market, you do not get to see fair and trusted sites. You do not even know and you loose because you dont have enough edge over the house to win. This does not make a site fair. There is often engineered machines designed in a way to make you loose.