The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

Penny,
you face FAILURE on a daily basis.
The Big Bang Theory Season 4, Episode 7

- Fear of FAILURE!
- Lack of confidence!
The Big Bang Theory Season 9, Episode 12

...their love seems unlikely
and doomed to FAILURE.
The Big Bang Theory Season 8, Episode 7

...wouldn't cause a structural FAILURE,
much less a homunculus such as yourself.
The Big Bang Theory Season 3, Episode 3

Why would I want somebody
with your history of FAILURE
Game of Thrones Season 5, Episode 2