I'm not sure if this is the core of the problem, if at all. Most of what you see on facebook are links shared by your network. If your "friends" are sharing and re-sharing clickbait fake news, you see clickbait fake news. This is evident in groups on whatsapp where there is no algorithmic intervention and it is still an endless stream of misinformation (in most diverse groups). This also mirrors real world echo chambers.
If you do have have some suggestions for solving this problem, it would be great to discuss here.