She turned my legs to/into jelly.

I have faith in him, even though he turned out to be a failured this time.

I wouldn't have been in this mess if I had had second thoughts/doubtsthought about it in the first place.

Practicinge

The faucet is running., somebody needs to turn it off.

Somebody turn it off.

I didn't say anything like that., stop putting words in my mouth.

Stop putting words into my mouth.

If I had listened to my gut, I wouldn't have been in this if I had had second thoughts/doubts in the first place.

best way to explain it in american english

This movie is so horrible. Did you see the ghost in that movie? She made my legs fall asleep.

idk what "legs to jelly" mean, is that 色情的含义？

I still have faith in him, even though he turned out to be aif he failured this time.

Stop putting words into my mouth.

I wouldn't have been in this situation if I had had second thoughts/doubts in the first place.

Make sure you either say "second thoughts" or "doubts". You can't say "second doubts". Maybe you know that already 👍

Did you see the ghost in ithere?

I have faith in him, even though he turned out to be a failured this time.

"to be a failure" is really strong. It's not that the person made a mistake, it's that they're completely useless, forever.

Because you said "this time", I changed it to be something less strong.