Yes, it has always happened, when Bitcoin goes down most Altcoins go down, but in a radical way, when you enter Binance and see the price of Bitcoin going down, when exploring the currencies that have risen the most are usually the ones that survive from Pump and Dump are easy to recognize because they are usually seen with an increase of 30%, 25%, but it is difficult to take that profit, since many groups are dedicated to pump and dump, by telegram there are many groups of this style, I think that it's the only way for those coins to have some life when Bitcoin falls in price.

I have read a lot, and some say that if there is a bearish stage of bitcoin, the currency that would be excellent performance in that eventuality is BNB and Cardano, but they do not explain why.