We should use this hard times not for panic but for learning. The more we learn, the more we analyze everything (independently, not just follow the mainstream) the more successful we will be in the next bullrun.
If we already know Cryptocurrencies at least 3 years then immediately take action, namely buying, not to learn or analyze, the market is difficult to guess, and there is no analysis that ensures we profit, it's better to immediately buy and have a target time to sell with profit conditions.