That 2 coins you mentioned is no question, a fundamental coin that is worth risking our money. But some small investors like to research those altcoins that are currently reached by their funds. They can buy a fraction of ETH and BNB but most of them want to buy a whole that's why they are looking for cheap coins and hope that someday, it will reach a high price.
That is everyone's hope because when one can get more and more good coin models, then the potential to get very large profits will also be very wide open when market conditions start to improve again
It's a hard task but with the right research, they can pick a better one.
It won't be too difficult now, because there are many references that can be looked at and read carefully in order to be able to make very informed decisions when choosing a good coin.