I also encountered the same situation, constantly losing dozens of times in a short time. Although it is entirely possible, the chance that you lose 10 times in a row is very small.
This isnt only applied on Freebitco alone but in all dice sites as well no matter how big their house edge or small it is.Tendency or chance of losing streak is inevitable and 10x lose in a row is indeed small.I do even experience 20x in a row which totally burn all of my balance in a blink of an eye..First of when i was a newbie then it do give out that kind of question on mind on hows that possible but later on i realize
on how do thing works and we shouldnt really expect too much that making money is easy as hell.Freebitco is reputable and been known by many btw and they arent shady at all-- OP just got burned by typical losing streaks that he might even not experience before.
I personally think that if someone is a newcomer and does not have a lot of knowledge or self-control, it is best not to engage in gambling.