There's no rules/strategy that works against the house. Everything is completely random.
You can hit 40 reds on 2x. You can hit 100. you can even hit 1 million. Nothing is impossible.
That's why there's no working strategy(unless you have an infinite bankroll, which is impossible.)
there is strategy which can reduce the risk of losing but it is still lesser den 50%. even if you are given the house edge, you also can end up losing too. so it is still very luck base too. u can profit but it is not gonna be working in the long run.
Nope there is no strategy that work well on long run. EVery strategy that used for a long run will end up badly, sometimes you will lose too for short run. This is not a guarantee and I have never heard there is some strategy that people use to get some profit for a very long time