In the gambling definitely luck is matter of win or lose sometime, but you can't depend only with luck, because your luck will favour suddenly but not always. So, need to proper analysis then depend on your luck. I won some of sports betting which was not my favour from the beginning but at the end of the match i won the bet, it was totally my luck.
A gambler should not rely solely on luck and strategy. When a gambler leans towards one side, it can be difficult for him to keep his money. However, we generally see luck playing a greater role in gambling. Casino gambling should prioritize luck over strategy, while in sports betting, strategy may play a greater role. But even there, luck is often relied upon. That is why the word luck is most commonly used in gambling. I have won some matches in sports betting where without luck, strategy would not have been possible.