Facebook group research + outreach posts for B2B software promotion

I have a Windows desktop software product targeting HR managers, school administrators, photo studios, and corporate offices. I need someone to identify relevant Facebook groups and LinkedIn communities... (Budget: ₹600 - ₹5000 INR, Jobs: Article Writing, B2B Marketing, Content Strategy, Content Writing, Copywriting, Digital Marketing, Facebook Marketing, Market Research, Social Media Management, Social Media Marketing)