Yes, of course, you can win money. But you can also lose money. In fact, more people lose than win money with Betway. Otherwise, they would be out of business.
Casino games use an RNG formula to dictate outcomes and the house always has an edge. You can win while you play casino but most of the time, you will lose when playing against the house.
Betting is somewhat more skill-oriented and there are people who work with it full time and also make good money. It is however not an easy job. You must be very committed and it is very time-consuming.
Our advice, in general, is to view gambling as an entertainment form. Not a way to make money.