Thanks darou, I will definitively switch to other numbers in the future ;)
Surely just letting the machine give you a random ticket is as good as any "strategy"?
You should avoid the numbers of the other players. Avoid the numbers in red, e.g. 3, 5, 7, 8, 9 and 12 and you lower the probability significantly that someone else has the same numbers and you need to share the big prize.
This post provides insight on how to determine what the other players do. I did not find out how to get to the exact quantities. Maybe you have an idea?