Losing is very hard to rub off, especially when you lose a lot of money in one night, I can easily rub it off now but when I was starting out it was hard for me.
I have a friend who always shows signs of obvious loss in gambling, and he always shows body signs like he doesn't want to talk to anyone and always looks far, always trips himself because his mind is wandering.
Now, do you have a body sign that people around you can tell if you lose money in gambling, I'm sure all of us have one, be honest with yourself

Well, what your friend's body language when lossing is kinda normal especially when you lose a huge amount of money.
Sometimes, when I lose I kinda feel like I'm easy to get angry with everything that bothers me, like someone's mocking me or asking stupid questions lol.
But most of time, I can easily shake off the feeling of lossing in gambling since I don't usually gamble with huge amount of money.