It's a cool idea, but pretty difficult in its current state. I think something that could help a bit in a future version (if you continue with this idea) would be if you gave each player their own character with dialogue, possibly face expressions or other 'tells' that would cue you into their intentions. You could also consider adding a bit of lore explaining why you're helping the player; maybe you split the pot and win a percentage of what they win, and can use that money to unlock other cheating abilities in the game. But overall I think this is well done for a jam game!