^Congratulations dude but unfortunately, I disagree when you said that is your skill which it does not.
It could a coincidence or made just by luck, dice game is purely based on luck which is there is no strategy that works on that if you are based on skill.
However, the martingale strategy on dice would effective but that is a high risk, high odds which means high risk and if you are willing to do this, there is a chance that could be you will gain profit. Just try to repeat the process, I don't know if that will happen again but for sure the chances will be lessened.