That is called the recency bias and for a trader it is one of the worse biases we may have, one perfect example was the bubble of 2017, when the price reached the top and began to go down many traders instead of taking their profits thought the price will continue to climb and they began to buy even more coins, then when it finally became clear we were in a downtrend instead of selling they held because the previous high price was still too fresh in their minds and we know the horrible losses they suffered as a result of that bias
Trading is essentially a form of reality check for us all
We may form some ideas about future price action (mostly delusions even if correct) based on our prior beliefs which essentially have nothing to do with market and its laws. And what adds insult to injury here is that we actually feel being right about our decisions even if they were proven wrong time and again in the past. We just can't first understand and then internalize (i.e. make it an integral part of our belief system) this sad discrepancy because it is so strikingly against everything we have been internally hard-wired for and equipped with by Mother Nature
As I have gained more experience as a trader the more I understand that the biggest challenge is not to create a profitable system but my own psychology, those biases are there for a reason since they help us in other circumstances, for example if I were lost in the wilderness and suddenly a lion appeared then it will make sense to put all my attention to the lion, if I were to wonder about all of those instances in which I did not encounter a lion then it will be over, however the zero sum nature of the markets establish that the majority of the traders must lose and since they use those biases when they are trading then that means the traders that want to be successful need to go against their most basic tendencies and that is hard to do
Yeah, that's what I was trying to convey
And that's basically the reason why most traders, especially wannabe traders, are losing eventually. They sell at lows because their instincts tell them to sell, as well as buy at highs because the same instincts tell them to buy even if they are fully aware that these instincts may be pushing them into making rash decisions and moves. We are built to trust our instincts without unnecessary reflection or hesitation so as not to get caught and eaten by the proverbial lion (a pride of lions). But they don't work in trading. Well, they actually work quite well but against us, simple folks