Well, this very common in the Philippines in towns that don't have lotto outlets.
There are too many lotteries out there if you want to bet and try your luck in the lottery -- just like Fortunejack and Duckdice and other lotteries that supported bitcoin on this list. ^{[ https://bitcoinchaser.com/casino/bitcoin-lottery ]} However, when it comes to strategy, I can't give you advice because even me, until now, I did not encounter such a strategy that considers as proven and tested. There are a few lottery calculators online but they are not as legit that give an accurate result. As a matter of fact, you can't minimize your risk of gambling if it is based on luck.