hmm, if you’re not listing on Google at all and you once were, I would check to see if you were blacklisted. You can do this through webmaster tools or by simply typing site:http://www.yoursite.com and seeing if anything pops up.
(Note: I just checked for you and you’re indexed)
Ok, since it is not that, I would say you need more of two things. Content & links. You’re also going to have to target terms you want to rank for and to be honest, free online casinos will be a hard one. It might be better to start with something a bit easier.