I had the same problem my whole life up until about two years ago. For whatever reason my default mindset was that when I heard something I didn't understand or was curious about, I would explain my understanding and frame that against what I thought was wrong about their understanding. I then expected them to respond in a similar way. To the majority of people this seems confrontational and argumentative, so everyone just thought I was being a know it all jerk.

I changed to only asking questions and/or mirroring back what they said. The change in strategy answers my curiosities and helps people to feel like you are listening to them and care about what they have to say. Hope it helps.

One great technique for understanding others (and often as a bonus also showing them they don't know what they are talking about) is to simply ask for the mechanism they are describing.

So when someone is in favor of policy X, ask them how X accomplishes the goal they are in favor of -- what is the cause-effect chain.

This (at least according to psychologists' research) usually makes people more cognizant of the gaps in their understanding, and also more receptive to alternative solutions or explanations.

Perhaps tone and word choice can help here, as well as communicating your pretext. Also, just because you’re curious doesn’t mean others share the same curiosity in the moment… depending on how and what you probe you can be irritating even if that’s not your intention.