Luck is always random, in gambling its based off the odds of the game.
If there was any real way to measure it people would be winning a lot.
nobody can tell you , and even the luck itself can not be proven its existence.
let's say there is something called luck , and it is come randomly. so then why people still expect it? just gamble randomly too , it is things make gambling interesting when you don't know the outcome and you try to gess it. keep dreaming to have a luck always by your side (if there's any).