for me I know that the best time to make a profit for buying and selling of Bitcoin is when you have a target of when you buy from them and make a profit so the best opportunity for me is one an investor to purchase exactly when the price of Bitcoin is going very dip so that when you purchase within interval of this month the most to be a change in the market so that when you said you can update make a proper profit from your investment.
setting of target while you're buying your Bitcoin is so essential that it's what determines when you should or shouldn't sell your Bitcoin regardless of your current profit status in your Bitcoin investments journey. Part of the reason why some people are eager to sell their Bitcoin whenever they are in the slightest profit or when they experience some DIP that's taking longer before it gets back to becoming bullish is that they are just buying and don't have a target they are hoping to get to for a particular time frame.
Setting target shouldn't be more of trying to set a range of value that you would want to buy and another range of value that you wouldn't buy. It rather involves setting an amount like getting to $40k before the end of a circle which will make you break down your target into a one year plan and then a one month plan and possibly a weekly plan and what will aid you to carry out this plan and effectively reach your target would be to follow up with your accumilation with the use of the DCA method which obviously is the surest way that will help you to reach your target the way you've set it out.
people like instant selling after purchasing that also generate a loss when you have not understand the system of Bitcoin because there are some persons when the purchase Bitcoin due to the price of Bitcoin or information of Bitcoin you showing that the market is going down they will be on panic to sell their Bitcoin that is the time they make a loss on the process
that's why getting the basic knowledge of Bitcoin investment is important before getting started. Part of the reason why some people sell out their Bitcoin is that the price was coming down and they needed to push it out as fast as possible so it won't go further than it already it. The reason why such things still disturb some people is that they are still mixing Bitcoin and crypto to almost be in the same level and maybe because they've hard that some coin do gain value to some level and then goes to become valueless, they assume that such thing is possible with Bitcoin. As someone that has been in the system for a while and have done some personal research which has fed me with some basic fact, the bearish seasons aren't different from the bullish season for someone that's still in his accumilation stage. As long as you've not reached your target, every bearish season should be an opportunity to buy more and not to sell your already bought Bitcoin because of any fear of any sort.