There are numerous ways to understand if future crypto is worth buying or not. First of all, you need to make sure that it is not another copied cryptocurrency project that is built for speculative purposes. Hence, you will need to research a lot, get familiar with its white paper, understand why it is created, and make sure that it is backed by a strong project which brings anything valuable into the DeFi. You can also explore its market condition and get familiar with such metrics as demand and supply, market capitalization, maximum supply, etc. Apart from it, read what experts think about the value of this or that cryptocurrency, find out if it is recommended on educational platforms, take into account its competitors, and always consider your budget.