Google Shopping for the shop of goods

Google Shopping has been set up:
- reviewed the site to comply with the requirements of Google and given recommendations to the customer on changes;
Create an account in Google Merchant and connect to Google Ads;
The programmer wrote a script to generate and update the product data once a day;
have passed the Google Moderation;
- the programmer has set the conversion tracking to evaluate the effectiveness of advertising;
Over the course of the month, the analysis and optimization of the results were carried out to obtain the maximum result. As a result of optimization, the share of advertising costs was reduced to 3%
The result can be seen on screenshots.