A broad request for feedback often produces broad answers: “good event” or “could be better.” If the group has one decision to make, ask a question that helps with that decision. The question should be small enough for people to answer from their own experience.
Connect the question to a choice
Suppose the group is deciding whether the introduction was clear. Ask which instruction, if any, was difficult to follow. That gives more actionable information than asking people to rate the entire event, including things you cannot change.
Avoid wording that assumes everyone enjoyed the activity or encountered a problem. Offer room for “nothing to add” and do not make a public response the price of participation.
Explain the next step
Tell participants who will read the answers and what decision they will inform. Collect only the personal information genuinely needed. If the process is not anonymous, do not describe it as anonymous.
Read the responses for concrete issues while keeping the limits of a small, voluntary sample in mind. One suggestion can be worth investigating without representing the whole community. At the next event, briefly explain any change made from the feedback so the request feels connected to an actual improvement.