It is always good to learn about price action before investing in cryptocurrency. Learning will guide your judgement in the market and prevent you from making decisions with instincts alone.
I see a lot of people complain about the recent dip in the market and I am surprised. Because if you know about price action, you would see that the signs were obviously there before it all went crashing down. On the daily time frame, Bitcoin broke structure and retested several times before heading down. The market warned you, but you didn't see it.
Market always can't tell anything without showing but we can understand everything. Even though you knew and your prediction was right as your post. Now I'm surprised that you did it. So I want to take an experience from your transaction history. Which types of altcoins did you sell before the last dump?