Targeting topics in display
Topics are categorized by Google. You can find yourself targeting sites "outside" your business focus.
If this is the case, I would switch off topics and run the campaign by placements or contextual targeting
Did you find any helpful responses or answers to your query? If yes, please mark it as the ‘Best Answer’
If you don't get a positive ROI then you should focus on contextual targeting as advised by Moshe.