That's a big no-no. Gambling with another person's money is a great way to lose that person's trust and friendship.
Only people who are addicted and cannot control them self are those who will borrow money from others as they would have lost theirs already and quite sure they will even lose out the others money and will not have anything to replay later. Thus this spoils the relations as well as not body loves this types of friends or relatives.
When people gamble with other people's money forgets the main rule of gambling 'Always play with what you can afford to lose'. I got some good friends from different countries from gambling platforms. But, as long as you don't involve money in the friendship then it stays. Never give or ask for loans in gambling. We can't predict anything. There is no guarantee that we could make profit from the money we gamble. especially for games of chance.