Currently, the price of almost all cryptocurrencies has gone up along with Bitcoin, so if the price of Bitcoin goes down, I think the price of other cryptocurrencies will go down as well. So at the moment if I invest 10,000$ I will invest 40% in Bitcoin, 20% in Ethereum, the remaining 40% in BNB, Dot, Soul, ADA and some other altcoins. I don't want to risk all my investments in one currency .