No, it isn't. You will, on average, lose more than you win. You are likely to win a small amount, but there is a small chance of losing everything. The expected result of any truly fair gambling with a house edge is negative.
Your screenshot demonstrates this perfectly. You've made a return of less than 0.5% of your investment. You will be able to do this almost all the time. And then, on that one really unlucky run, you will lose it all. Your expected return, over a long enough series of runs is negative.
indeed "one really unlucky run" =max 25 rounds (max profit: 244.70) ...i'm new to this, ever happen in just-dice.com?