Does anyone know which connector I should use for google ads?
Domo currently doesn't support a direct connection for Google Ads anymore. Your options are to utilize BigQuery and have google ingest your Google Ad data there and then pull it in or utilize a Google Sheet to pull in the dataset. I wasn't a fan of either (didn't have BigQuery and there were some timing issues with Sheets) so I ended up writing my own python script to call the google ads API and then upload an API dataset to Domo.
This KB article may be beneficial to you: https://domohelp.domo.com/hc/en-us/articles/360060270674-Google-Ads-Connector#4.0.1.