Free things would just be limited and more so ever they do it so that one can try out their site and see what games they like it and comeback and continue to play. But yes, one finally have to invest their money in gambling to play the games and rightly said that one can lose the money much easily than winning them. So, play as you play normal games rather than playing just to mint money from it and everything will be fine with it.
It cannot be denied that if someone already likes the game then they will do anything for it including investing it to play in gambling, I am also like that in the game of Crash but what power even if you lose it continues to be played.
Well that's how it is easy for us to lose money compared to winning but that is common for gamblers so the victory ends, the most important thing is to play with their satisfaction.