I do not think that using math or other predictions you can win in gambling, and especially in roulette. There everything is designed for pleasure, not profit.
That is right. Math can't help you, but it can assist you in some points. There are some branches of Mathematics that can help you with these type of activities. There are the probabilities and statistics. Probability is mostly used in gambling, the proof is the percentage of win you can see whenever you roll your dices in some gambling sites, everything has their percentage of winning in gambling but it is pretty small. IN terms of Statistics, I think when most people use that kind of trick or skill and won a lot, you will be doing the same thing, you will start to search or ask some people about gambling, gather some data that can help you win.
I remember having a lesson in my math class before wherein we calculated the probability of winning in a game of dice. It won't help you win because computing or calculating the probability won't tell you what to bet on but it could help you in making gambling decisions and bets. By knowing the probability, you will be able to deduce or tell whether you should bet higher or whether your chances of winning is very low.
So in a way, yes, it could help you win given that you apply it properly.
It can help if we master the probable outcome topics but if not then it will be purely luck. Playing with maths can make us theorem sometimes applicable and mostly not especially when not applied properly.