So if you click these logos you are right in thinking these are Facebook. In fact the blue logo on the left is Facebook BUT for your personal account. The orange flag is the old Facebook Pages app which is now no longer available.
For business pages use the Business Suit app. That way it will stop you posting as yourself on your business page and can also link to your Instagram page
Now let’s try one more question
Q: Which platform has the most users and and plays the most video?
Click the image of the platform we are talking about.