I know BNB is very popular. But we always have to think before investing. We have to invest our money in different coins. Because if any coin is cheated then our money will be a small loss. The rest of the coins will be invested. If they are good then this loss can be recovered very soon. And if full money is invested in any one coin then the amount of risk will be high. We always have to invest with risk. Never worry about disappointment after investment. After doing either profit or loss we have to accept these and trade then we will be able to succeed.
I agree that first of all it is necessary to think and then to invest. The most stable altcoin is Ethereum. It has the biggest comminity and altcoins and there is a big demand in ETH. It means that more and more people will use ethereum increasing demand in it.