I understand that newbies are not really going to profit that easily because of these mistakes, but while they are making that mistake, they are also learning something new, all those veterans were newbies that did those mistakes once upon a time, we make the mistakes and learn and be better thanks to them.
If the beginners had done some research they would not be making the same mistakes that the veteran makes because the veterans that made the mistake has already shared it and we can learn from them to save the cost of the mistakes which is to lose money. But most beginners do not care to do research and only act as they like which is why we are having repeated mistakes happening every time.We should hodl when there is a bear market because the price will bounce back. Bitcoin is volatile therefore we do not have to buy at every dip too or sell at every dip, we need to have our plans on how we buy based on the capital available. We also should not make the mistake of ignoring Bitcoin during bear market to only chase after the price during the bull market, as that is wrong.
Sticking to a plan and not falling for someone else's perspective is key to self-improvement. We should strive to become better at analyzing the factors that are worth our efforts (how and why news affects the market, why we shouldn't go after the crowd which panics a lot out of nothing, the flow of smart money and the moves from big hands, and many more).