Leaders and Outsiders
This is the simplest of the analysis methods, in which the entire period of draws is taken into account. If you calculate how many times each of the numbers fell out over the entire period, the difference for different numbers can be quite large. The numbers that fall out more often than others are called leaders, while those that fall out less often are called outsiders.
Doing the math, yourself is quite tedious, but you can find ready-made statistics on lottery operators' websites, as well as in specialized print publications. Let's say we found such data (or were not too lazy to calculate it ourselves). How to use them? It would seem that in this case there is nothing to think about. If the leaders are falling out more often, that's what we should be betting on. But it is not that simple. Practice shows that if a number comes up more often than others, it does not necessarily continue in the future. And vice versa, a number that has been "lazy" and falling out rarely for a long time may suddenly "wake up" and start falling out more often than others. It is still more profitable to bet on leaders, but leadership alone is not enough. It is necessary to look through the entire history of the number, and if its leadership is justified by a very long circulation, and then for a long time it was not particularly different, it is not worth choosing this number. However, if an outsider has earned a bad reputation in old draws, but has recently "improved" and begun to catch up with the others, it is worth choosing.