as far as I know when you use borrowed money to gamble it will only make you more stressed when you experience losses and failures when gambling, it's better to use money that is really not very used so that when you lose then if you lose your assets won't be too frustrated.
Indeed. We just force ourselves too much if we gamble with borrowed money. What for? There is no guarantee to win big prizes with borrowed money. We must remember that gambling isn't an investment, it is more likely a luck game. As it is luck-based, it is better to play with what we can afford. Borrowing money will be too risky, on the next attempts we may get more losses. Just stop playing when no money for gambling anymore.
Not everyone has the same risk understanding as you explained here, the borrowed funds are like overdose for killing themselves in the long run. Risky choices may increase the adrenaline and this can be the reason behind choosing this option. Of course, I don't advise using the other people's funds for fun but some people can't get rid of the addiction simply.