In order to trading, we must look at how much a coin decreases and increases and within what range this coin is moving in the market. We have to buy that coin after coming within a minimum range. And when everyone starts buying this coin, the coin will suddenly go up and you have to sell it at that time. This way you can easily get 10 to 20 percent profit.
Which kind of coin or tokens you are talking about? Easy to tell this but your predictions are not correct. Cryptocurrency trading is kindda like online money machine, it's not always be easy. You can't buy on the lowest price and sell at the highest price. You need to learn technical analysis after that you will understand when you need to enter & when exit alert.