Python3 Application, how to replace bunch of nested loops to improve performance(reduce execution time)

I have an application which has a bunch of nested loops and if statements. I believe these are the necessary burden to handle dynamic and unexpectable random sequence arguments. Or maybe I don't know python that much. Most of the loops are used for string comparisons.

If anyone knows some design patterns or some alternative way to solve this, please give me some hint or links so I that I can study! Thank you