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.

Rejects ITSELF.
Westworld Season 2, Episode 4

The statement stands for ITSELF.
The Big Bang Theory Season 2, Episode 9

you will fight at the Great Pit of
Daznak ITSELF, in front of the queen.
Game of Thrones Season 5, Episode 7

Right, a ball of hot, flaming gas
that collapses upon ITSELF.
The Big Bang Theory Season 2, Episode 4

You know, that dark matter
isn't gonna detect ITSELF.
The Big Bang Theory Season 2, Episode 11