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).
Even fortune teller can not know when your luck comes to you. you are the instrument to be lucky if you do not have an effort you can not know your luck this is what other said if you are working too much work you can provably getting a high reward that we can consider it lucky.. so if you are always gambling someday you can hit a large amount of profit but we can not say that you always win because if you are just holding your funds and never spend it and use it back again to gamble you are not experience to win. better to spend it when you are hit high wins.. that we can considering lucky.
lol , just simply nobody can. luck is like god , both are something invisible, some people think you just delusional, there is no luck/ no god. the evidence of luck/god existence itself have a lot of doubt.
don't rely on luck to gamble , you have to rely on nothing, just do gambling and walk away.