First, let me ask you: which is better, losing money or making a profit? Let's be realistic, wouldn't we all prefer to make money than lose it? Obviously, your friend's fate is much better than yours, but this isn't about regret; it's about risk. Didn't you know you would lose in the end? Of course.

Therefore, losing isn't something to regret because the outcome of gambling is always unpredictable. The point is, if you lose, it means you're just unlucky. It's that simple.