In this case probably in a first moment everyone start to sell and convert in btc for pass in fiat/stablecoin but in a second moment with low price they will start to buy altcoin and waiting for the btc incresing price, in this case you can accumulate more of your favourite altcoin
if altcoin is also coming down strongly it is a sign for us to buy, because the opportunity to gain a lot of profit is there,
right now altcoin is still a bullish trend so don't expect you to get a cheap price
Sudden market drops are often a time to buy cheaply and you should set the price to sell to ensure you are profitable when investing. Any altcoin will have a short time to recover and take advantage of that to make money.
I really like making money this way and until now it still works for me. However, the risk will be great because when Bitcoin price drops, it is impossible to predict anything.