All casinos are EV- in the long run and thus all strategies. In the short run, many strategies can be profitable.
This has been discussed million times in gambling section
Btw, sometimes is better to place one big bet than 100000 small bets.
It is simple math, lets say you have 1BTC bankroll:
1) place 1 BTC on payout 2X and you will either lose 1BTC or you will make 1BTC.
2) Divide 1BTC in 100,000,000 small bets and bet all on multiplier 2X and lets say house edge is 1%. In perfect conditions, you will win 45,000,000 bets and you will lose 55,000,000 bets, which means you will lose 0.1BTC in long run. If you continue to bet you will eventually lose all bankroll, because casino has 1% advantage over you.
Now, regarding strategies:
1) There is no such thing as short run or long run if you use strategies(martingale, fibonacci etc), because eventually bad streak will occur. Unless you have crystal ball there is no possible way to say when it will occur.
You can run martingale(or any other method) for days and eventually you will hit that bad streak and you will lose your bankroll.
You can run martingale(or any other method) for 10 seconds and very bad streak could happen and you will lose your bankroll.
In any case, no matter what method you use, you will lose your bankroll, unless you are in circle of 0.01% super lucky people who managed to beat casino and house edge.
So please, would you stop repeating that there is winning method because such method doesn't exist!
Stop writing nonsense, I am sick tired of ignorant people who are repeating nonsense in gambling section, THERE IS NO METHOD/STRATEGY/SCRIPT/BOT WHICH WILL HELP YOU TO BEAT CASINO.
Whoever is selling such script knows that, because if there is winning method seller would use it.
Besides, you said you were testing strategy for 2 years which is big red sign in first place because if you tested winning strategy it means that you made lots of money and you don't need to sell script to earn more!
OP please lock topic, we are all tired of reading shits posted by scammer.