Too much altcoins appeared on the market and many of these altcoins are not useful at all.
That is why it is necessary to check everything. Not all new altcoins are prospective and will bring a profit in the future.
The fall of the market is the best time to buy altcoins for the best price.
The most important is to find the most promising assets that will be able to survive during the fall of the market.
To do this it is necessary to have experience to evaluate the potential of the coin.