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.

they have lamentations,
they have pieces of THEMSELVES
Westworld Season 3, Episode 8

They started to sound not like THEMSELVES.
Game of Thrones Season 5, Episode 2

Men who fought King Robert
to free THEMSELVES
Game of Thrones Season 2, Episode 1

Anybody wanna introduce
THEMSELVES?
Breaking Bad Season 3, Episode 9

The Warrior punishes those
who believe THEMSELVES
Game of Thrones Season 6, Episode 10