English Translation
Let’s chill and watch a movie tonight.
Gemini says
"This is grammatically correct, but it sounds extremely stiff and unnatural—almost robotic.
If you say “Décontractons-nous,” it sounds like you are a yoga instructor telling a class to release tension in their muscles, or a doctor speaking to a patient. It refers more to physical tension than “chilling out.”
It suggests:
“On se détend et on regarde un film ce soir ?”"