I have never seen someone who is truly religious playing gambling.
There are many religions out there which are small and shady as anything. One of them is well known from its "elders" indulgence in certain dehumanizing things. Hence a religious person may not always be a good person. Gambling though is known to bring bad outcomes to those who get addicted to it and thus religions abhor it. But there are many religious people who regularly gamble and lose money in it, without any remorse.
Hence we should not see the thing as A=B always. Whether to gamble or not is a person choice and we should not judge people based on that. If they are happy with it and their belief, let them be.
This might be old but this one shows up that even church leaders do really love to engage with gambling. lol.
Making up some indirect reasoning about that it is really just that for the church.
Priest wins $100,000 for church in poker game
A South Carolina priest missed the $1 million top prize in a poker tournament to be televised this weekend but he won $100,000 for his church.Source:
https://www.nbcnews.com/id/wbna34526512Some religions does prohibit gambling but those leaders are the ones who do really love to engage with it
on which it is really that totally contradictory.