Many people wonder if they can still schedule posts for and publish posts to their personal profile.
Unfortunately the answer is no.
Facebook discontinued the ability for 3rd party apps to schedule content to a personal Facebook profile in August 2018.
We recommend that if you use Facebook to market your business, you should use a Facebook Page and not a Facebook profile.
Remember the difference between FB pages and profiles:
Pages have fans who "like" the page
Profiles have friends who "friend" the profile