I don't know much about Poker but my research says to improve your deal-making skills in private games, focus on building rapport and trust with your fellow players. Understand the dynamics of the group, such as who tends to be risk-averse and who is more willing to negotiate. Being calm and clear in your communication is key, as well as recognizing when a deal can benefit both parties. Develop the ability to read the room, identifying when players are more likely to accept a deal or when they might be bluffing.