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'm a fan of anything that tries
to replace actual HUMAN contact.
The Big Bang Theory Season 5, Episode 10

Human beings have two eyes.
Money Heist Season 3, Episode 3

...that adds no value
to HUMAN relationships.
The Big Bang Theory Season 4, Episode 5

...and the vampire bites a HUMAN...
The Big Bang Theory Season 6, Episode 9

...the lowest classes of the HUMAN race
have spent their lives laboring...
The Big Bang Theory Season 3, Episode 14