It seems so hard to win here without any strategies, if anyone can help me out with one, I would continue to bet or I am out...
Its random, only hint i can give you is maybe the martingale method or go with your gut feeling. I tend to watch the crashes and when you see it's taken a few red numbers then go for a 2-3x. There are some people who have better methods but most don't share.
But even if going with martingale, I have seen that the probability of winning is least compared to the probability of losing...
And yes, some people are actually making some handsome amounts of BTC but they won't share their secrets, so we need to find it out ourselves I guess, or instead I would say, I am out of this for some time, need to rest a bit before getting back into this...

To win the game, the crucial point is to grab the bonus.
But there is no universal working strategy, as the bonus distribution not only depends on your action but also the other players' actions.