I got a sigh of relief when I finally discovered that Myers-Briggs is partly broken. It's designed to not offend anyone by avoiding measuring neuroticism so it's "work-safe". I had been struggling to understand how people were able to understand personality defects of out of the Myers-Briggs system and then eventually it became clear that it doesn't do this, it avoids measuring neuroticism, and worse than that it's on shaky ground because it does a poor job of typing people anyway because a persons personality can "shift" around over time. I'm still new to the Big Five though, I've only skimmed the surface of it, but at least it measures neuroticism and should plausibly give you better insight.