Its really simple.
People only want to buy at the bottom. The cheapest possible price they can. Every day of the week.
But when its running to blazes up like a rocket they panic and buy whatever they can because that is the bottom to them. Thats FOMO.
But when the down turn starts. The buyers are still there. Dont think they are not. Hell I just got added to the list as a new potential. So theres one more for you. But ill be damned to buy when I know its going down.
So the buyers keep moving back waiting. Biding their time. And the sellers will continue to sell from profit taking, laziness, boredom. Maybe they need to pay tax or rent. If they were really dumb they borrowed money to trade and need to pat it back. Multitudes of reasons, but usually it all just comes doen to time. Until 1 of three things happens.
1. The sellers give up. It sits stagnant for long enough (and likely not long if its a hot stock) that the buyers realize there are no more sellers left desperate enough to sell it down. Then they start to buy up some and if the trend turns maybe you get uptrend and FOMO again for a solid bounce.
2. The sellers sell down too hard, past obvious strong support levels, into oversold, and the buyers step up forcing the change.
3. News. Big news can sometimes change the swing. But if the down turn is bad enough it can be sold into. Dont stress on that, at the least its selling at that level and not going down more.
So to answer in a shorter form. Noone is buying, thats why small volume pushes it down. But it can and will change. Thats why support and resistance levels are so important. And someone with a chart is always nice to have around