Translation of "Fucked" in Japanese

"Can we fix it?" - "No, it's fucked!"

「直せるか」　「いや、こりゃもうダメだ」

I think my German is really fucked up.

私のドイツ語は本当に駄目だと思う。

We are worn out because we fucked all day long.

一日中合体しっぱなしだったのでくたくたでごんす。

- I think my German is really fucked up.
- I think that my German is really bad.

私のドイツ語は本当に駄目だと思う。

- Beat it.
- Fuck you!
- Go away.
- Fuck off!
- Go screw yourself!
- Screw you!
- Go fuck yourself!
- Get stuffed!
- Get fucked!

クソくらえ！