Create highly shareable video and photo content
Amplify reach on some posts with paid promotion. (Recommended by industry pros)
Publish 5x/week; experiment with posting outside business hours
Use this for amplification. First, allow organic reach to accumulate for up to 24 hours, then pay some of your total budget to boost the post. Wait for up to 24 hours for reach to accumulate again from the promotion, then, apply more money for increased paid promotion.
Include CTA buttons and links
Use Facebook Live
Test giveaways with your audience.
Focus on educating, and whenever possible entertaining, your audience.