It is difficult to find undervalued altcoin which can give us a profit because there are so many of that altcoin type, and if we found one or two, we will need to wait for a long time to sell. It is better to stay with the altcoin which has the potential to increase, so we don't need to wait for a very long time to sell. You need to think twice to select the undervalued altcoin to buy.
the most difficult thing is to make sure the project stays alive for such assets. because the possibility of an increase will depend on the planning of the project. when the developer is dead it's a nightmare. like your deed is very risky. Coins that have a low value and have the potential to rise are coins from a new project that successfully did the IEO. but it's like gambling.