There’s constant large amount of coins printed for the team and their VC’s in which they can sell on a daily basis to dump the market. Also new coins being owed to the miners are periodically unlocked as well (in FIL it’s like a ponzi, you gotta wait for your rewards to be unlocked after many months to take everything out). Basically too many coins can be sold daily, very little demand, real use case, or hype.