Updated: Aug 19
1. Your Profile
Yes it is your personal account and your posting has high organic reach to your network of friends. However, you cannot run ads.
People want to know you as a person.
2. Business Page
Yes it is your business page with lower organic reach. However you can schedule to run ads with insights provided on how effective your ad is.
People want to know how good you are.
3. Business Page > Running Ads
Below are common types of ads seen: