...My only advice to anyone in the market is to never sell the coins at a loss, all you need is the patience to hold for a long period even if the market goes down as the market will recover eventually.
I don't think this is the right advice, very often selling coins at a loss we fix it, not allowing it to become even bigger. In such cases, we can buy this coin at a lower price than we sold it. And just sitting and waiting for the price of the coin to return to the previous one is inefficient, since this wait can last for several years.