You are right in the some aspects but not in all of them. Buying is the main way to start your doing on the cryptomarket and the next position is the holding here.
There's a lot of opportunities here in crypto but buying a coin is the main thing to do so it is necessarily to buy more and in order to hodl for the purposes to earn profits when it fluctuates.
But be sure you buy coins that have possibility to grow not just buying because of its price. Cause some coins never grow instantly and most of them just it takes years to recover. It is better not to after of its cheap price but to look its potentiality to rise and have a strong platform.
Not all coins that you would trying to hold are worth it because some of them are shitcoins that copied to other cryptos. Always do a technical analysis to choose coins that you want to invest , do not just put an investment and decided to hold it's better to make a research.