Using Serper API to Find Negative Google Maps Reviews

Hi guys, this is what I did so far I already scrapped google map with location and using Serper dev 'place API' and now I want to find out the companies negative reviews in Google maps without using Clay credits so what should I do now? like should I again use HTTPs and company urls and use the review API from the serper dev and do it? can you guys share a video tutorial on how to do it liek what to write in the body part of the HTTPs feature?