Hello 
I was wondering if you have any strategy when betting and what's your biggest lost
Cheers !
Most effective is martingdale strategy but it's up to you if you follow that strategy and don't be greedy it can cause you to lose all your money be contented.
Most effective strategy to lose all your btc, did you mean like that? Huh
There is no effective strategies, as discussed so many times before that it will always depend on your luck no matter what strategies you use while betting.