Translation of "Screwed" in Japanese

You're screwed at the end.

最終結果はめちゃくちゃだからです

He screwed up his courage and proposed to her.

彼は思い切って彼女にプロポーズした。

- He dared to propose to her.
- He screwed up his courage and proposed to her.

彼は思い切って彼女にプロポーズした。

- I mustered up my courage and went there.
- I screwed up my courage and went there.

私は思い切ってそこに行った。

The driver really screwed up the team when he drove them to the wrong playing field in a different town.

その運転手は、まるっきり違う街の間違った球場にチームを運んで行ってしまうという大ドジを踏んでしまった。