Structured - many teams struggle to discuss problems effectively, the first goal is to find a simple framework to structure the problem discussion. A simple one I use often is setting a simple matrix on a big whiteboard, the top row I place the discussion topics, divide them with vertical lines and then divide the verticals horizontally into 4 buckets, challenges, causes ("why"), easy fix, harder fix. This is a simplified 5 whys approach to root case analysis. I then get the team to brainstorm and start mapping stickies into these buckets. This provides a simple structure to the conversation.
Simple and Fast - Once the team identifies a number of improvements or fixes they believe can improve their problems, I encourage them to start by selecting the simple ones. Within their span of control, limited analysis needed, and easy to implement. Finally, the fixes should be fast to do, 1-2 days max in effort and duration.
It's not initially important whether the fixes actually provide sustainable improvement or not. That will come with time once the team learns how to learn by tackling smaller changes often. This approach allows them to move at their own pace, is sustainable and will likely provide a positive reinforcement as they can finish what they started. Stop starting and start finishing also applies to continuous improvement.