When Bitcoin drops in price, all other altcoins tend to drop too, since crypto is commonly valued in terms of BTC (i.e. If DOGE costs 100 satoshi, and BTC falls in price, but DOGE is still 100 satoshi, then the dollar value of DOGE on coinmarketcap will still drop).
All in all, I think today is time to buy! ;)
I do not think so, I already did it ;)