You’re not using the translate part of the site but just the part that reads it back to you.
Copy and paste your work into this part of Google Translate and then press ‘Listen’ to hear someone read it back to you.
Others have suggested that really you should just be reading your work back and out loud instead.
If you do want someone to proof read your work then take a look at Fiverr for some awesome people willing to help
Just never translate it from English to another language and back. Otherwise you end up with this: