I have seen someone who does not know anything in prediction of soccer but finally he won a game that someone that been playing a gambling have not win for a day
That's begginer's luck and I have personally witnessed it multiple times. I even know some gamblers who ask help from people who don't know anything about football to tell them on which team they need to bet.
Luck-based games don't require any effort as you said but are are more likely to win on a skill-based game if you have the experience and the skills required.
Back to the topic. I hit huge multipliers many times (>x5k) but I don't consider it as big wins since in most of those cases I bet the minimum amount.