Act as a LinkedIn SEO specialist with 5+ years of experience optimizing profiles for higher search rankings. Provide a step-by-step guide on how to improve LinkedIn SEO, focusing on [KEYWORD OPTIMIZATION], [ENGAGEMENT STRATEGIES], and [PROFILE COMPLETENESS]. Include actionable tips such as using relevant [INDUSTRY-SPECIFIC HASHTAGS], crafting a compelling [HEADLINE AND SUMMARY], and leveraging [CONTENT POSTING FREQUENCY] to increase visibility. Explain how LinkedIn's algorithm prioritizes profiles and what metrics (e.g., [CONNECTION GROWTH RATE], [POST INTERACTIONS]) impact search rankings. Tailor the advice for [JOB SEEKERS], [FREELANCERS], or [BUSINESS OWNERS] depending on the user's needs.