You seem like a person who just wants to get a sense of the game. Nothing too serious or stressful. I know you have said that you do not mind losing, but still you should know that you do not have to bet any money yet since you are just looking to have fun. There are casinos that you can play their games in free mode- it doesn't require that you bet anything. I also think that you don't even need to register. Those are like lures to make want to register. One of the casinos that hd the feature the last time I checked is Megapari. It's the same fun but there is no win or loss of some real money involved.
Those casinos who has got the free mood most likely use that to lure the players to registering and I'm sure by the time you register and start playing with your real money you will find out it will not be as easy as it was in the free mood so it's almost same thing as gambling without the intention of winning but just to have fun.
I think the intention of having fun is just a strategy to not getting hurt if you turn out loosing your games, but then some persons do not mind probably because they did Gamble with their spare cash so they literally don't get hurt when they loose the money, they find it more fun because whenever their money is involved, they get more thrilled than in free mood where they know nothing is at risk and they aswell Don't have to stress about the accuracy of their picks, they can literally depends wholely on lucky because it's just for fun.