Exactly! Mathematics will somehow help a little but depends on what kind of game you are playing but overall winning in gambling is just a pure luck for me. If its not your day then you'll lose no matter how good your cards or your position in game.
What you are posting here is totally contradicting. At first you are stating that math might sometimes help a little but you are also stating that it is just pure luck. Thats totally contradicting, if you have no idea then you shouldnt be saying anything at all. It doesnt has to be your day as well because most people will just lose every single day regardless
Do not say like this that most people lose because if we consider two gamblers and one lose the game so another one will win the game so do not consider the losing side only but give importance to the winning side as well. Maths can help you in counting things and multiplying things for quick response so these simple steps are here. Luck is always here but your probability of winning game is high if you have much experience of a particular game.