Seeking Help with Prompt Engineering for ICP Identification

Hey Guys, I'm new at prompt engineering. I'm following the 3rd Lesson in Cohorts to use prompting to get the main ICP the company sells. So far I haven't found success neither at running the test on only 3 rows, nor at getting the right output under a column named "Company sells to". Does anyone know how to fix this, or if there's a tutorial that I haven't watched to solve this issue? Thanks