when the price goes down and the strongest support can be destroyed, then catching the falling knife at the right time (next support) is best, but you have to use gloves (don't ALL in) to back up when the price continues to fall.
Prices will not continue to fall, but when there is a downtrend the price will continue to be played and will continue to fall. we should be able to read where the final price will stop by analyzing it. Money Management will be needed in these circumstances.
People do not see those support lines, they just see price going down and they think they should all go out right away, I have seen people sell literally right at the support line, by logic if the price is at the support line, put it a bit under that level for stop loss and if it breaks under it, you will get out and price will freefall to next support line, but if it doesn't break under it, at least you won't be selling at the bottom, that is the worst thing you can do, there are people who sold at 45k for example, why would you do that, it bounced right back up after that.
Long story short people have no idea how to use indicators and do not know what to look at, it would be impossible to lose money this easily if people knew where to look at, even the most veterans lose money but they do not lose money this way, they definitely see these easily.