Most cryptocurrencies will lose their value over time, and this is something that you should take into account when holding your currencies for the medium to long-term.If you are looking to keep your coins for a long time, you should do your research to ascertain which ones are suitable for such a purpose, and which ones are not. Currencies such as Ethereum, Monero, IOTA, and Dash are all considered leading coins and experience the most trade volume on a daily basis.You should be sure to follow each coins chart to identify low periods or times of stability and instability.
I think that at this point you should only invest in bitcoin, you can see that the market is fluctuating continuously and is in the long-term bearish, only a small bitcoin adjustment can also cause The price of altcoin is very strong. So if you invest in altcoin the risk will be very high, this time I believe you should only invest in bitcoin and should only invest in short and day trading.