Hi @Jasleen If you could share more specific details about your campaign, I could help in a better way. But what I recommend for any Facebook campaign is look for the ROI & Acquisition rate. It gives an end to end picture of that campaign's contribution to your business ROI. I have experienced a few of my campaigns on Facebook had double cpc rate, but the picture was incomplete there. Then I looked at conversion rate from that campaign and found that the conversions are way better, and my acquisition rate is lesser then my similar any other campaign.
I recommend you too to compare campaigns on CPA basis rather then CPC or CPL basis.