I agree with you 100%, for a new comer it is like mission impossible. They need to figure out the amount to invest? what to invest in and for how long to invest for? and then they need to asses the risk as well. And once it all gets sorted than there comes all the expectations that they will make it BIG in the market.
So the wholesome idea is to plan your strategy, implement it and than brace yourself for the worst outcome. This way the expectations stay low and you avoid making hasty decisions.
The best method for newcomers who are interested to invest in crypto industry, is to utilizing Dollar cost average (DCA) for gradually accumulate Bitcoin and holding onto it for long term can be the most effective approach to maximizing profit . Day to day trading in Bitcoin is generally considered very risky, as Bitcoin is very volatile and highly unpredictable asset by its nature, unless you posses good technical skills to analyze charts to take informed entry and exit decisions. Additionally, to maintain good emotional control & employ risk/money management techniques is essential for successful trading.
Yes, There are many ways it can be done as you mentioned is also true there is a definite market correction is always an option for the savvy because the cryptocurrency market can be very volatile with significant risk.
Buy the DIP, and HODL! to me is the classic term used most often. Although buying dips and holding on to assets for the long term can be a viable strategy for some investors. My view is simple, namely that it is important to always see where the market is going and I am sure that anyone can be a winner with a record of being able to keep their emotions in check because trading is a game of psychology that stimulates one's adrenaline in trading.