I have loss 15 times in a row so the best is just avoid gambling.
It is even possible for 20+ loss in a row. I have seen people losing like 25 or more in a row. As usual varience is a key, the lose streak will come eventually if you play long enough.
This is exactly correct. Over time you will have both winning and loosing streaks that stretch into the double digits. This will not happen often but it will happen. Very similar to how there can be multiple blocks found just seconds apart from eachother