Luck or chance depends on the type of gambling that you're engaged in, although no standpoint of viewing gambling can guarantee wins. If it's mostly casino games like slot then it is basically luck but if it is sports bet you can analyze the chances of winning your bet. Bettors who don't analyze games are depending on luck to win because they don't rely on statistics. Whatever strategy that you choose to measure, whether it's luck or chance remember that it is mostly luck that you need to win. Always use small amount to gamble, that is the only tool that you have a control over.
I think that experience is often worthless in gambling regardless of luck or chance. In sports betting, experience is valued, but ultimately luck determines victory or defeat. In gambling, slot games are 100% luck based while in sports betting winning chance is same to experience and luck. No matter how you look at gambling statistics luck is a major factor in every scenario. When you bet on sports strategically you might think that the best team will win but it turns out that the team that perform best on the field always wins. Your observation and research of teams throughout the week can be considered useless simply because of luck. Many strong teams lose to weaker teams. That is why a recommendation is valuable. You said to always use a small amount of money for gambling this is the only way to minimize losses.