One of the big mistakes that i see new traders do is they immediately jump into trading high volatile low currencies and they end up not having the attention or the time to concentrate, where they should be going for much more reliable and flexible trades, like bitcoin or Ethereum where the price are constantly changing and you can make some good profit from it if you make the right decisions at the right time.
They see it from others that it's more rewarding.
That is the reason why they choose to trade those type of cryptocurrencies because they're mostly being hyped. They trade without the foundational knowledge that they need as a trader.
And when they experience how hard it is, they learn from it but with a pair of losses.