it's very natural. beginners will definitely feel scared and confused when the conditions of bitcoin and altcoin experience a very deep decline. different from seniors or experts who have known the side of the crypto currency and are able to overcome if the crypto condition has decreased.
Well it is natural but I think if a person make his mind to invest his money so he should not be afraid of it, at very beginning and first step one should try to increase his information and knowledge about bitcoin and then after that he should invest his money otherwise it is not advisable to sell or buy coin you dont even know about so for me it is good to have proper information about your investment only then invest so it will give your proper profit.