I use martingale strategy it is easy but high risk.. need big bankroll

I don't know what is the best strategy..
You need a big bankroll for martingale but you also need big limits in whatever game you are playing in your favorite casino, but I think martingale sucks as a strategy because you only need a few losses in a row to never see your money again.
Big bankroll has no use in martingale. It will just eat all your funds until no one has left. I'd rather risk my funds in random betting than using it in martingale.