Facebook & Instagram Social Media research tool to find famous sites by Keyword

I Need a tool which should search on Facebook and Instagram for famous private accounts and also business pages. I need to able to enter keywords in the tool and then the tool should show me a report of the most famous pages about this keyword. In the report should be shown: 1. Name of the social media page, clickable so i can open that page. 2. Number of fans 3. Only german facebook and instagram accounts should be taken into account. 4. Report should be sorted by number of social media fans. 5. I need to be able to save the report for example in Excel format. My goal is to find very famous fashion social media sites so i can contact them and start cooperations with them. I don't mind how this application is coded. It could be a windows application or also a web based application. thank you