"Buy the dip" is something only fools believe - and as can be seen in here there are unfortunately many fools in here who do not understand that their money is already lost
My opinion is very different from yours and probably we will not find a common language.
I believe you are one of those who bought bitcoin in December 2017 and are now surprised by this fall...Do you know what a chart or trading is? The price cannot move up 24 hours a day, 7 days a week. Yes, today we see a decline in prices and if you look at the chart for 10 years you will see not the first such decline. It is important not when you bought bitcoin but how you know how to deal with it in the market, because even on the decline a real professional knows how to make a profit.