Yeah in most cases the both market follow the same trend altcoin most time depends on the Bitcoin market to make any significant move be it bull movement or bear market but at this period it hard for one to define the present conditions of the altcoin market some altcoins made tremendous movement recently with shiba inu making a sudden uptrend movement even while other altcoins where on correction mode.
some altcoin will show its strenght although bitcoin price drop, whales or big investors move their money to another coins that maybe thinked cheap and have low risk if pumped. bitcoin and altcoin price mostly move parallelly , so if understand how to enter and exit market maybe it be best opportunity.