You can certainly make shorterm profit however the market can be VERY volatile and unpredictable. There are risk factors and other variables you have to evaluate and even still something can not go your way. Best to not try to time the market and to hold a few good coins and profit off them.
If it wasn't volatile then the profits would not be possible, you know. I think trading and keeping your profits low but steady is a good strategy. Start with 10-15% profit which you can get every day on lot's of coins (as coinmarketcap shows). Just Analyze the charts and make buy when the price is lower than it usually is these months.
I think daily trading can be done with various coins, but I heard that it is better to choose one coin with regular fluctuations and follow them for this purpose.