It is manipulation- all what you need to know. Just be patient and it will pay off. "They" are trying to throw out "weak" hand of the market before new rally of crypto and entering institutional investors. So don't be fool and hodl your coins, and you wouldn't regret about your decision.
We can not know for sure the reasons for this falling. But calling this situation a manipulation is wrong, because this is a halfyear downtrend.