Get right and left string of a word in A String

Question

So Basicly I want to Get the left and right string of a known word in any String

For example we got this "bla bla bla Kappa pog pog pog"

I choose to get the left and right string for the word "Kappa" the right must = "be bla bla bla" and the left must "be = pog pog pog"

Project : here is My Code :