I am sorry I do not speak German, but I have used Google Translate to read your post.
The videos are still on DTube, for example :
https://steemit.com/deutsch/@exomagazinfree/oprkbggq
DTube has downvoted you as Cheetah has flagged all your posts - wrongly I believe.
The confusion may be because there are two Exomagazin accounts :
https://steemit.com/@exomagazin
https://steemit.com/deutsch/@exomagazinfree
There is DTube Discord Server and there is a Deutsch channel there. I suggest asking there for help to sort this out :
RE: Warum Dtube und Steemit nicht besser ist wie Youtube und CO! Zensur auch bei Dtube - Das wird Dtuber SCHOCKEN!