Do not invest in one basket because it is very risky. so invest in BNB and ETH so that you can benefit from both, there are many other altcoins that have potential and you also invest in some
Investing in ETH and BNB is still too risky, look in March. The price of ETH and BNB has fallen by more than 60% in just a few days and it makes a lot of people lose. I think just investing in Bitcoin is enough, this year the market will not be good for altcoins so we need not risk it.