12 Mar Facebook news feed algorithm
Is not something you can control, so stop bothering about it.
There are over 100k factors being taken into calculation to determine what to appear in your news feed. No matter how you try to combat the artificial intelligence behind it, Facebook will only make it stronger.
So the rule-of-thumb is to play by the rules, give value and maintain a good community that sticks together. Last but not least, advertise. Organic reach is dead, long live advertising.