Optimisation of Google Shopping Ads

We are a health e-commerce website and we have been running Google Shopping ads for 5-6 months now and we have seen good results. We now want to increase our efforts and so we want to optimise our Google Shopping Campaigns better to increase revenue. Therefore in this project, we want to optimise our Google shopping campaigns and want to know the methods of doing that so we can do follow those instructions in the future. As a result, it is quite important to conduct video calls with the freelancer to understand the process of optimisation.