One of the biggest advantages of all online advertising is the ability to capture data on every action, no matter how small.
Ask your Google Ads agency if they will provide reports on a predetermined schedule, and if those reports are included in your management fees. Additionally, ask what is included in those reports. Will they include strictly data, or analysis of the data and expert recommendations as well?
At UnitedAds you will get weekly or monthly reports including expert feedback on the results and recommendations.