You can choose the placements in ad manager .the platform the Facebook can show in different placed like Facebook Instagram audience network and messenger
In Ad manager existing three types at audiences. The first audiences is core audience , this audiences is the default selection in Ad Manager. The second audiences is a custom audiences this is the it has been shown intention whith your Brand and the third it's the lookslike audiences this the same new audience custom
Its this Audio I'll give key for success in Facebook Ads . You must have a niche specific and one time boundaries and one choose a goals attainable and measurable and adjusted your variables
This lesson I learned how choose the campaign correct , this decision I will allow get the results necessary and desired