Do you find it challenging to conduct customer discovery interviews?

I have been running my startup for 6 months now and have conducted more than 100 customer discovery interviews. Looking back, I realized that in many of these interviews, I asked a lot of leading questions. As a result, there weren't many valuable learnings from those calls because I was primarily trying to validate my hypothesis and guide the participants towards positive answers, instead of genuinely listening to their problems and understanding their needs.

I want to ask if you conduct customer discovery interviews. What are the underlying goals for doing so? Do you find it challenging to ask good questions to explore problems? And do you use any tools to help with that?