I have seen a lot of altcoins that dropped 10x in the bear market and have equally rise by 10x pump and still hoping to pump in the upcoming bullish run.
For example altcoins like BHC.
Therefore for one to invest in altcoins one must carry out technical analysis and proper research before buying some altcoins.
In the anticipating bull run there is going to be alot of altcoins in the market, don't just rush into buying without a proper examination, if not the risk of losing your money will be high
Absolutely, it is common for both Bitcoin and altscoin to drop to the extent of 80% or even more during the bearish market period, that generally persists for two years or longer. Howeve, it should be kept in mind that not all alts coins recover their price when markets recovers and enters in bullish phase, usually following the halving event with exception of Bitcoin which historically makes new all time high (ATH) during the bullish phase. DYOR