Targeting: Facebook always showing your ads to the people they think are most likely to take the action your ad set is optimized for. Because of this, it's usually a best practice to not restricted targeting. A target audience that's to narrow may reduce your chances of spending your budget and properly delivering your ads. We recommend having at least one audience that is larger (500,000-1,000,000 approximate size) to help increase your campaigns reach and delivery. One way to do this is to removing unnecessary targeting restrictions from your current audiences.