After you finish writing your steemit post,you go to Facebook and post it on your Facebook wall or your fan page expecting upvotes
This is totally wrong as the not all your friends that are not on Facebook are on steemit, and thus you are unlikely to get upvotes even if they wanted to give you
The best way to promote your steemit post on Facebook is by searching for steemit groups on Facebook by typing steemit in the Facebook search and joining the groups
Start by introducing yourself first and not spamming the group with your link,interact with people and then start sharing your post,this way you will be able to get upvotes to your post
Thanks for reading this post and feel free to upvote this post if you enjoyed it