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.

I don't want the goon SQUAD rolling
in and stealing our shot, you know?
Breaking Bad Season 5, Episode 8

Yours is the First Squad, Sixth Company
of BRIPAC.
Money Heist Season 3, Episode 2

You’re going to the slaughterhouse,
there’s a SQUAD waiting for you
Money Heist Season 1, Episode 1

First Squad, Sixth Company of BRIPAC.
Money Heist Season 3, Episode 2

- Where's the rest of your SQUAD?
- Uh...
The Big Bang Theory Season 2, Episode 16