I entered Crypto market for 2 months and usually see the term "pump and dump", and some P&D groups. But i wonder they pump by selling and buying themself, so when price go up, who will buy it for them and they sell that for who???
With Blue-chip coins, someone could buy when it've pumped already because of good news. So with trash coins, who'll buy this pumped coin and why many PP&D group still live until now

Remember they are making others feel panic, and the fact that if you are seeing about if the pump will be happened a the whole of people in the exchange site will be scared to miss it and then they are rushing to buy it asap to take the advantage to sell at the top, but they are totally wrong because the pumpers will try to liquidity all of the token again. They are selling for themself.