I noticed some altcoin in coinmarketcap, and I see the coin keeps going down, which I ask, will the coin be lost if the price keeps going down, or will it not go away and the price will go up?
Did you mean these coins will have died if the price will still be doing down? But remember all of these coins were starting from nothing to something. It doesn't matter where crypto goes.
There a lot of people are talking about various FUD attack crypto right now.
We have been surpassed good momentum of crypto, and then we will see another bounce again to the ground.
Don't hurry yourself too much as that is normal in the cryptocurrency market where the price of altcoins goes up and down. Definitely all the altcoins were valued against bitcoin and not fiat. Though we can see in market price trackers the value in fiat, just like the US dollar, that could be the value of bitcoin of that particular Altcoin which is transformed again into fiat. Just hold on, check and observe the market trend then decide later.