I have been thinking for a long time about this question and recently I am trying something. This approach would be using several filters.

1. How many 'days out' is each number.
2. What are the most common 'followers' of each of the numbers.
3. Include at least one number in each of the game from the previous draw. So if your game is a Pick 5 game and numbers 1,2,3,4,5 is drawn, then for the next draw play five set and in each set include at least one number from the previous draw. Many times at least 1 number repeats and often times 2.

In China we have a 6/33 plus bonus ball 1-16. Below you can see how many 'days out' each number has been drawn.

The latest drawn numbers was 7,9,12,14,21,23 Bonus ball 6

1.Take a look at your own lottery game and pattern out what is the average each number come out after being drawn.

2. What follows each number? For example ask yourself: What number likes to follow 7? What number likes to follow 9? What number like to follow 12? Etc. Etc.

This is just food for thought. Try it out yourselves.