From an ethical standpoint, it seems to me that accepting money from gambling, even for the purpose of furthering a religion, raises questions about moral responsibility. The problem is not the money, but the source of the money. If we accept funds from a practice that can destroy people's lives, we may be complicit in that destruction, albeit at the level of good intentions.
Winning is not really a matter of money but it is a matter of where the money comes from, some people who have a religion that opposes gambling may reject money given from gambling sources but this is a case that often occurs in my country they say that those who reject money from gambling are too hypocritical, actually in my opinion if you win and don't want to accept it, it's better to talk about it properly so that there is no conflict.
The good intention of giving money from gambling will be a problem in my opinion, therefore we should just use it ourselves for our needs, after all we have to gamble using our own money.