Facebook ad is very simple and straightforward to set up. But if you are not careful enough you might get high CPC with your ads. And there are so many factors that may cause you to have high CPC with your ads. First, ad relevance plays a crucial role. If your ads are not engaging or relevant to your target audience, Facebook may charge more per click. Second, competition for your target audience can drive up costs. The more advertisers targeting the same demographics, the higher the CPC. Third, your bidding strategy affects CPC. Overbidding can lead to unnecessary costs, while underbidding might limit your ad visibility. Also, poor ad placement and low-quality creatives can also increase CPC. Analyzing these factors helps identify areas for improvement.