Before we do gambling we must consider the fact that in gambling we cannot really win everytime, there are sometimes loss and we cannot deny it. I believe that if we do gambling we can gain a lot of profit if we have a good luck and if we dont have the luck we can lose our funds or even everything on it. So before we do gambling we also need to take the posible loss, i suggest to make a limit on gambling so that we can take the loss if we loss on it.
Management is one thing that could save in the likes of that problem. Putting not only limitation in betting but also to other aspects like time management. If one had a lot of time to gamble then pretty sure one will be able to get more losses. I agree with you that we cant really win in gambling everytime. I think time management itself will going to suffice in controlling the betting addiction. However in my opinion since OP stated about how to prove that losses is part of gambling then it is very simple to take the loss. Acceptance of everything that has happen and moving on to the next gambling time and then enjoy or have some fun excitement. This is the real essence of gambling.
There is only two outcomes and it is whether you win or you will incur losses, most of the people who want to make deposit in many online casinos because they are aware ti the potential reward and only few of them understand the risks and it is the reason why majority of them are losing money. When there is money involved, our greed push us where we cannot control out thoughts anymore and we are creating decisions which is really not good. Proper risk management should be master first before a certain gambler invest huge amount of money in a certain online casinos.
Lossing is part of gambling. But it would be a good practice to limit the betting amount in order for one to survive not taking too much of other resources that has been intended for other things like providing the basic needs. In order for one to make a good way to make betting is to make a list of how much money being use to gamble every time as well as the winning money and then see the difference whether you earn or not. And whatever the result with the calculations then you can decide on what to do next.