You can post a YouTube video on Facebook with just a few clicks or taps, using YouTube's "Share" feature to post in a status, ...

Open your Facebook app and tap Menu in the bottom right corner. Tap the gear icon in the upper-right corner. You can also scroll down to Settings & privacy and then navigate to Settings.

To unhide a post on Facebook, use the Hidden from timeline filter in the Activity Log located in the three-dotted menu near your Profile cover photo.