Nobody can tell when a dip will come or when it will last. This is why a new investor should forget about buying the dip and focus on building his bitcoin portfolio bit by bit with DCA method where you have the opportunity to buy bitcoin every week or monthly with consistent and persistent irrespective of the price of bitcoin since you are on a long term journey.
Not taking the risk to invest in bitcoin is riskier than taking the risk to invest in bitcoin. This is why it's better to risk it and invest in bitcoin since it's a good asset worth throwing some value into and grow it overtime with the right amount from your discretionary income. Have a target and stay focus on achieving your goal. Emergency funds is needed to survive in your bitcoin accumulation journey.
You're right, long-term bitcoin investors don't need to be fixated on falling prices to make purchases. Because if you wait for the price to fall before making a purchase, in my opinion this could damage the momentum of investing as early as possible. Because for example someone is going to invest in bitcoin, but because the price of bitcoin is currently rising, that person decides to postpone their investment until bitcoin experiences a significant decline. Meanwhile, as you said, no one knows for sure when the price of bitcoin will rise or fall. Therefore, people who delay investing in bitcoin also don't know when they can start buying bitcoin. Because he also doesn't know when the price of bitcoin will fall. So waiting and waiting is what such a person will do.
Therefore, anyone who wants to invest in bitcoin, starting as early as possible when they already have cold money is the most appropriate thing. Because as we know, long-term investment in Bitcoin will still provide very promising profits at whatever price we buy the Bitcoin. So doing the DCA technique is the right solution in bitcoin. But instilling thoughts like this is not an easy thing, especially for beginners who are starting to invest. Because as humans we have fear, and this is a big barrier to fully believing in bitcoin. Because according to my assumption, people who wait for the price to fall first to start investing, it could be said that such people still have a lot of doubts about Bitcoin. And according to my personal experience, it takes time to be able to turn that doubt into belief.