My longest bad streak is also 12 -13 but I have never done 200k rolls in one session, most of the times I limit myself to a couple of thousand rolls. As you, I also tried a lot of different strategies already. Most of the times I ended in a (small) profit but sometimes I got busted and lost a big sum. I still play Martingale from time to time but try to stop myself when the bet would become to big.
We always have the martingale from time to time I don't want to use but always tempted to use it, I guess it will come down on managing your emotion, you need when to pause and resume your game or totally stop and come back, you cannot have everything in one sitting, I am now using time out on all my session and had success using it, the saying that strike, when the iron is hot, should not apply in gambling.