It's really easy to say it, but if you try it yourself... you'll learn what is
Easier said than done. I can said, you're lucky while you buy bitcoin... the price will pump and you can sell it to gain a bit profit. Since the length between buy and sell is only a few seconds, it's called as trading.
The interesting news is here
Day Trading Bitcoin: Why 95% of Traders Lose Money and Fail. Bitcoin price is very volatile, you should be careful about it. Trading without any analysis, management risk and only hope the price will increase... is very similar like gambling.
I mean getting loans from people, without interest(sure), then i can make 1 bitcoin in few minutes, then return the money to people, and my deal is success without risk ( as i will hold no more seconds. )
Wake up man, where you can get loans worth 900.000$ from people and without interest? LOL, cryptocurrency is very risky dude, I hope you think twice before taking loans from someone.