I'm sorry to disappoint/disagree with you, but that activity is something known as "margin bots".
They do constantly sell/buy tokens at a low amount. And they'll always outbid you by 1 satoshi whenever you try to buy/sell something.
They make money by you being impatient, they force you into buying, suprise suprise, their position. Any coin with a decent trading volume has them, and quite often more than one.
Usually those bots follow the trend however In general I'd say they're always driving price down.