Indeed it is, this is not the first time someone posted here about 20 + loss streak and as a matter of fact alot of people has posted the same things over and over again so for me it is pretty common here ( you can check few posts back ). There is nothing wrong with it and you are just not "lucky" with your rolls . You will need to learn about provably fair ( I gave you the link above ) and you can always check wether your rolls are rigged or not . Simply follow the steps on the website to verify your rolls

Here another link for you http://dicesites.com/tools and from the sites you can check that the probability to get 20x loss streak is about 0.00011637% . The number is close to zero but it is not impossible so with that being said, conclusion is that you are unlucky to have 20 + loss streak