You have a one in fourteen million chance of getting all 6 numbers correct. How you choose them is irrelevant.
To increase the odds you need to calculate how much you would spend on the lottery in your lifetime. Put the whole lot on in one week and, win or lose, never, but never play the lottery again.
Let's say you plump up say �50 a year. You are going to play the lottery from age 20 to age 70, 50 years. That's �50x50 = �2,500 spent on the lottery in a lifetime. If you spend the whole lot in one go, the odds of winning go from 14 million-to-1 up to 5,600-to-1. These are much better odds, although, and it can't be emphasised enough, you will still probably lose.