How to locate cell containing given text in LibreOffice Calc?

There is a very similar question here: Identify cell containing given text in LibreOffice Calc, but in the answers they focus on regex and 1-dimentional range even though range type is not specified in the question. Please help to locate a cell within 2-dimensional range.

I think I have designed the procedure using ideas from the linked QA and two helper cells columns. I would like to know if it can be done without helper cells. TIA