Definitely pump and dumps are a kind of manipulation where the team or the big investors purchases most of, if not all, the buy orders resulting in yhe pump and encouraging others to buy as well for quick profits and when people fomo in the peak forms the investors sells his inventory there causing dump and the only person in profit is the investor/manipulator in the end.
Therefore we need to be careful with trading on coins with small market, we have to ensure that we are the one who will be profitable and will not end up a bag holder. I pity the newbie who will fall for this pump and dump scheme, but we can't prevent this from happening as it has become the norms in the market.