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.

Once you make the hole
to CONNECT the tunnel to the factory,
Money Heist Season 1, Episode 8

Anything that can CONNECT to a network
and our phones!
Money Heist Season 3, Episode 4

CONNECT with the judges,
sabotage the competition.
The Big Bang Theory Season 12, Episode 10

but instead I got to CONNECT
with you at a human level.
The Big Bang Theory Season 7, Episode 1

♪ You know how we CONNECT
Up in the club ♪
Breaking Bad Season 4, Episode 2