Yes, we still need our lucky, which can support us to win the games. So we can see that both trading and gambling will need the luck to make money, but the chance to lose will be bigger in gambling than in trading.
How do you know that you will have a bigger chance to lose money in betting than in trading?
For me, trading and betting are the same types of work. You need analysis, money/risk management on both.
In trading, your profit will depend on the performance of the company or the currency owner. And in betting, your profit will depend on the performance of the team you bet on.