Actually it's quite a huge risk investing into cryptocurrencies below the top 100 on coinmarketcap but you can also get some cheap cryptocurrencies to buy and hold and sell later. Most of those coins actually take time to see some rise in its price but some certainly do. You just have to be patient and wait.
Crypto currency investment is a matter of confidence and patience and we must be able to see every opportunity we will get in the coins that we will use in investment and in my opinion with great risk of course the results will also be great