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

for me bad mode is the obvious sign especially i already have big losses in gambling . Lol but i used to talk but when i feel something wrong in my surrounding suddenly i become mad.
And i have friends that has the same characters when losing in gambling and what you said above is perfect for him, so if i knew that his not feeling well because of that reason i gave hime space for a while. Lol