You can’t invent data after the fact.
No matter how badly you want it—if you didn’t measure it, if you didn’t track it—you don’t have it.
Technology is powerful, but it’s not Sumadartson (Nostradamus backwards (I assume that’s how it works)).
In my estimation, at least 50% of “mysteries” in the data are just signals that something broke. Another large portion, overlapping in some fashion with that 50%, is the reality that things didn’t work out the way you expected.
Will you spend your time chasing the answer or finding the next solution(s)?