I'll give a quick example of the points above. You sell a stainless steal garlic press.
1. Make pivot table and include a column which calculates KW profitability based on $5. Your cost of making the garlic press.
2. For auto campaigns the pivot table will show you profitability of search terms. At the top will be "stainless steel garlic press", "garlic press", etc. at the bottom will be "bench press", "wooden press", etc
3. Negative phrase "bench" or maybe "bench press", and "wooden".
4. Check back in a couple of weeks and re-evaluate.