First, head over to https://app.datatrics.com/channel and search for Google Ads.
Click on the green "Integrate" button and you will be redirected to the following screen:
Click on "Connect to Google Ads".
Log in with an account that has permission to read and write in the Google Ads account you want to connect.
Allow Datatrics to access the data.
Choose the account and customer Datatrics can use to create audiences based on website traffic or to upload known profiles.