Duras and German opening are two different openings.
This is the mainline of the German:
I think you should change your happy pills ASAP.
I know people want to be original in the opening, but 1.e4,f5?? is not the way to go about it. If you insists on being different then try 1.e4,Nc6 where black is at least still in the game, but of course it's suboptimal and 1...e5 1...c5 1...e6 1...d6 1...g6 1...c6 and 1...d5 are all superior options to it, but are all orthodox.
Try an interesting variation of the Sicilian if you want to be different.
1.e4 c5 2.Nf3 e6 3.d4 cd 4.Nxd4 Nf6 5.Nc3 Qb6!?
1.e4 c5 2.Nf3 Nc6 3.d4 cd 4.Nxd4 d5!?
1.e4 c5 2.Nf3 Nf6!?
just some ideas...
All better than 1. e4 f5!
Personally, I like the Accelerated (I don't know why), but I wouldn't say it is unusual.
The reason everybody thinks white wins is because...white wins. White is up a pawn for no compensation. The black can't seriously consider castling kingside (not enough pawns are there anymore) so black will castle queenside. White can also castle queenside and black's attack is non-existent. White will be able to convert the extra pawn.
The opening has been refuted since the second page. You've just been denying it Shutter Island style ever since.
Also "petermh5" style.