More traffic, more money will come from the Facebook Ads.
But, how to create, how to setup, how to option for your Facebook Ads ?
1) Create your Facebook Ads
2) Edit your Campain
3) Set the cheapest "Budget"
If you set the bigger budget (spent), your account (paypal or credit card) must pay more money. So, try to set it to the smallest value.
4) Pause your Facebook Ads
Don't wanna pay more money for your Ads, you can change the Facebook Ads to Pause status.
5) Target more Countries to get biggest visitors