I remember those days like it was only yesterday. I'm surprised it's been a year. I think it's normal to drop. The value of bitcoin could not be expected to increase continuously. After each value increase, there will be a decrease. But such a drop came as a surprise, since everyone thought that bitcoin would reach the value of 100,000 dollars. The value of bitcoin will remain at the 20,000 dollars levels for a while longer. I don't think there will be a rise for at least another year.
It is true that time flies, we are still battling a volatile market caused by war and inflation without even knowing that a year has passed. But I don't think bitcoin drop is unexpected, like 2018 cycle when bitcoin hit $20k ATH people believe it will hit $25k, similarly, when bitcoin hits $69k, everyone wants it to hit $100k. It's our greed and that's why many losers when believe bitcoin will hit $100k. Bitcoin does not follow our thoughts, it is we who have to run after it, so never set your goals too high and then be disappointed.