As always it's the traders that could take the opportunity when to buy and when to sell so if you are not the kind of bitcoin user who does the trading all the time, just learn the coins to invest and hold for a long time. The key is to be an early investor or just wait for the dip during the bear market. Doge doesn't have a technological advantage over some of the tokens, so this should be a warning to its investors. If you are talking about ETH, the early investor who bought below $1 must have been the luckiest guy.
Yes, we must consider the choice of currency and the time of purchase. Entry time is very important. Perhaps the virtual currency bear market is the best time to enter the market. The key is that I must persist.