Martingale betting system does not work because when you lose 5 in a row you will hit table maximum and cannot bet enough and you will lose your bankroll/lots of money.
I use to bet that way. It makes a pattern on the board. I had a few dealers recognize that pattern and they would know I was betting one side of the wheel. They were good enough to spin that ball so it would hit the opposite side every time. So I stopped using that system.
Working on a podcast with my son n law. That we're going to do in the future. Called one more throw. But for now got a pateron site going. It's got a lot of good people on it. We all help each other out. Lot of exciting new videos. Your welcome to join up.