Many people lost their portfolio because of lack of market structure. Not every dip or rally you jump into. These is my view why many lost during this Bitcoin decline.
Many actually lose if there's a correction to happen. But you will not lose until you sell. For a holder, it's normal to see a correction like this but you have to analyze that if you've been in the market, you're still profitable. Can you give more meaning about the lack of market structure?
An investor should get into it if he/she sees a dip. We'll not know if after this we get to skyrocket again until it finalizes to break $40k once again.