It's actually a very difficult question how we can still have fun when we lose our money.
But in this case, I think that each person has a different feeling and that's why they handle the matter differently. Of course, losing money can never make a person laugh.
But I personally consider this matter as a source of entertainment, just like we buy a subscription to Netflix, or spend money to travel somewhere. Similarly, I console myself by thinking that maybe I am buying the craziness of playing games with money.
It's like the enrolment fee that we pay and even we lose, we're still learning something. If someone is doing a test and he's losing, that's also fun.
The truth there it isn't just all about the losses and lessons. But also, there could be some wagering requirements that they're trying to meet.
And so, that's still fun for them and it's like a side quest that they have to reach in able for them to have that reward while having fun despite getting losses.