Need someone to work on Google Shopping Ads for my Shopify Website

I have a Shopify website that runs on a premium theme. The site is 4 years old and I sometimes run Google shopping ads for the products. Off late the results are not good so I want someone to have a look at it and fix what's missing or what can be done to improve it. Also if someone can handle the ads for a month or so.

The site is home category.