Google and Facebook are not connected. If you attempt to Connect your Facebook on YouTube ..oops it's gone.
Google is the number one search engine and YouTube is Google owned 2nd largest search engine.
This means that Google is not indexing videos on Facebook this means to you lack visibility. Google and Facebook don't mix.. Think about oil and water..
Consider this article released today bu ReelSEO today.
Both platforms are great for posting video. This helps all our business using video as a marketing tactic. YouTube Dead or in trouble.. again ROFL..