Do you think Luna can still recover from this price menace?
Only if people are stupid enough to fall for it again.
if you think it will not recover, what is your advice to the investors?
Don't invest in BS that's only created to make the creator rich. That includes:
Altcoins, ICOs, Forkcoins, "stable" coins, Defis and NFTs are created for only one reason: make the creator rich.