There is nothing we can predict in the future regarding the price of altcoins, but what is clear is to try to see in the past where the price of altcoins from year to year experienced a lot of price movements. But if you want to invest try to buy bitcoin or ethereum
Those two are the best options that one should buy when they're asking for legitimate cryptos to invest not only for next year but also for the upcoming years.
A new project has a chance to become successful but not only of them are. The good old cryptos like these two have been good over the years and they've remained at the top.