Perhaps we can appeal to their sense of fairness. Offering to engage in a friendly game or trade for the ball might persuade them to return it without confrontation.
Additionally, we could offer something of value or assistance in exchange for the ball. Our technical skills or knowledge might be beneficial to them, fostering cooperation.
Maintaining a non-threatening demeanour and emphasising our intent to resolve the situation amicably is crucial. Our goal is to alleviate tensions, not escalate them.