People don't have statistics to play gamble and that is why some of the gambling enthusiasm do experience (shege in gambling... meaning much loses in a gambling) so it's good for gamblers to know a specific amount that should go out in their wallet weekly or monthly.
Gambling is for fun, when you say statistics you get me thinking of trading or investing and planning more to gain money. Losing in gambling is a normal thing, or in another term is the safest thing to do; once you deposit you money think of it as it's gone, thinking more about winning will definitely ruin your mood if you lose and then, you start thinking about playing again to chase your losses.
Most of addicted people in casinos are those who are trying to make money out of gambling, it's so unhealthy to keep that mindset, so statistics are for the casino to make and that's why they don't share any algorithms of games and how profitable that game is.
The phrase saying, play with care, is not the same as play with moderation. When you play with care to me it's like you are saying you should be profitable and find strategies to keep winning. Most people lose in gambling because the casino is a money generator for the owners. If you plan too much you will end up losing more money and have more chances to get addicted.