What tool do you use for customer problem analysis?

It's undeniable that finding the real problems to solve is the shortcut to the product market fit. My co-founder and I usually use g-doc, g-sheet, or notion to summarize the problems that we hear from interviewees but I always felt like there is a better way to do it. I found a tool like https://www.opinionx.co/ allows you to rank the problems from your survey. So I was wondering if there are other methods or tools that we should be using.