In the long term, cryptocurrency market will only grow, so you have nothing to fear. But the risk of a correction remains.
Yes, for experienced trader, there is nothing to fear! they understand the market. some times go down deeply. some times go up. and they know when the rigth time to start to invest and holding BTC for long term. so, i suggest you to learn more from experienced trader. You will believe the brigth future of cryptocurrency, in this poin, brigth future of Bitcoin. Dont worry to much brother.