What you need is:
1. A good offer - product or service
2. A decent funnel of your social platform - you have updated valuable content and your profile guides your prospects towards closing deals and sales.
Instagram for example is a platform where there are 2 billion monthly active users, in these 2 billion people, there's a percentage of people that would be interested in your offer.
If you believe your product is good, these people will want it, and if your funnel is good, you'll get more clients dealing with you.