So in weekends in my departmental WhatsApp group, we just randomly talk about soccer bets and sometimes drop a particular game and keep it open for correct score prediction to be made on it, and the first person with the correct score goes home with a data subscription, this has been going on for almost two years now and people have gotten used to it without knowing it.
This is one of the chat I just bumped into by one of us in the group chat and at this point I feel most of my friend have made it compulsory to always gamble every weekend.

Do you see this as addiction or just catching of fun?
Mind you, we just enjoy the moment and might just joke around with people making predictions based on the teams, they love but we are mostly gamblers at our different ends.
I think it is just one of the members trying to make a joke in your group chat. Because, like you said, you guys are having fun and talking about gambling, so I think one of the members wants to make a joke. Looking at it, it really looks like a joke, but if you want to take it seriously, then you should be ready for the consequences that will happen to you if you do it. But seriously, don't take a loan and then gamble with the money you just borrowed. Life will hit you so hard if you lose the money you borrowed just because you gambled and took the risk of doubling it. Taking a risk is fine, but do it with caution and proper thinking.
If the one who sent that is serious about that, then maybe he is really addicted to gambling and has experience loaning some money and trying to gamble on it. Don't be like that, and be a responsible gambler.