Instead of just holding coins for an uncertain time, it is better to staking to increase profits. Each coin has a different staking result, I can't say how much I get every month because the staking time is different for each coin.
Although it is possible to make some profit through staking, it has a big problem too. If you stack your coin for a certain period of time, you will not be able to use it till that time. As a result, if the price of the coin falls during this period, the loss will be more than the profit.