For now you don't need to invest in old coins, considering the prospects are not good, the chances of them competing today are small, considering the number of new coins that have sprung up the prospects are better and promising for now, you just need to look at market conditions carefully to invest true and correct.

You can try to invest in Dot, Link and Defi coins, for now the market opportunities are better, but don't forget to analyze before you invest, see market movements and potential increases in selling prices, because not all new coins also have good potential.