A good time to buy will be when the market will be turns around. Now buying any altcoin is a huge risk. Look at the current decline in the price of bitcoin
now is a good time to buy, because we can see now in CMC, almost all tokens / coins go down, and when prices drop is the time to buy and sell when prices have gone up, not vice versa
If there are no prerequisites for growth, then what is the reason for such a purchase? Buying on a falling market is the same as playing Russian roulette. It is better to wait for a trend change in the market and get less profit than to get big losses