And what is the possibilty of having a 7 losses, then 3 wins, 2 losses, one win and then having 8 losses out of 20 rolls?
That is was happened here. I couldn't catch everything on the picture, but I can upload the missing part.
The probability of an exact sequence isn't really relevant but there's absolutely nothing amazing about that happening. All the rolls are provably fair and you can verify them rather than making arbitrary scam accusations based on thing but having lost to a bad stretch of luck.