Bitcoin is king in the crypto market, all altcoins have trade code with bitcoin so when bitcoin increases or decreases the value of altcoins will adjust accordingly. When Bitcoin drops people will sell to BTC or usdt if they are good altcoins that make the altcoins lose value. In addition to the fact that there are no new funds poured into the altcoins, trading volumes fell to the value could not increase.
but now bitcoin is not entirely a benchmark for altcoins, because I often see when bitcoin rises altcoins don't rise and vice versa. but I don't think we need to panic when the prices of bitcoin and altcoin go down because I'm sure prices will rise soon, we wait until the end of the month I think there will be an increase. so now is the right time to buy bitcoin or altcoin.