When you say that cryptocurrency price movements have a cycle every 4 years, I really agree, Bitcoin also has a cycle that is almost the same as that. What we need to do is buy cryptocurrency before it reaches a cycle that will probably occur next year.
It is the fact that we have 4 years cycle of bearish-bullish season. This cycle is very helpful, we know quite clear when we must accumulate (entry) and when we need to exit. Without the cycle, we may be quite confused to determine the goal. So, understanding the 4 years cycle is very necessary. Sure, what we should do, is to accumulate before it reaches the last year of bullish (before 2025). Next year (2025), should be the time for exit if it is according to the theory. In 2025, it will be not a recommended time for buying.
Yes, before we invest, it's best to do research first and really make sure that the project is not a scam, because this is a matter of money. We have to be careful so that we don't lose our money. Many experience losses due to lack of experience and not doing research before investing.
Research is a must, specifically for new coins. But foe old coins, research will help us to know the progress of the coins in the market and predict the potential of the price in the future. Losses sometimes are unavoidable, but we must take some lessons from them. So, we can stay away from the same mistakes in the future.