If you see, the price of Altcoin went up very high in early 2018 and then the price of Altcoin fluctuated in 2019.
Now in 2020, people are expecting the price of Altcoin to go up. If the price of Altcoin goes too high then it will be very difficult to buy.
Some people say that cryptocurrency is a digital currency, we cannot calculate its value because we cannot accurately estimate the value of cryptocurrency / Altcoin. We can say that when people give bad news about cryptocurrency, people get upset that they sell their currency.
What exactly do you want? You presumed in 2020 the price of altcoin will be high and difficult to buy and presently it is not high, then you should not expect to plan more buying at the wrong time. All these seasons have their advantages. Which invariably Should mean. Buy what you can buy now and when it is high change your mode.
Inability to calculate the value of bitcoin is simply because of its volatility. And that should be well studied by every trader for a profitablel trading.