Hi Numina,
Ensure all the technical and onsite SEO is 100%, then as this is real business, focus on Bing and using their ad system instead, more actual business runs through their platform (decision makers, executives etc). If you are selling cheap hair cuts and nails at home, use insta and Google local, but for genuine business, focus on Bing.
Bing have a lot of serious businesses using them, Yahoo, DuckDuckGo, LinkedIn, OpenAI etc - the list goes on
“Hi,
We are run the Google ads search ad, call ad, and display ads campaigns for last two months to Medical Coding services in the USA. But we can't get the leads and calls, why this happen. Because I have run the different campaign/ads already on different sectors like Education, IT/Software, Transport, Real Estate, Finance, ect. We generate quality leads for these sectors.”