Act as a YouTube growth strategist with 5+ years of experience helping creators scale their channels. Provide a step-by-step guide on how to optimize a YouTube channel for maximum growth, focusing on [NICHE], [TARGET AUDIENCE], and [CONTENT FREQUENCY]. Include specific tactics such as keyword research for video titles, crafting compelling thumbnails, optimizing video descriptions with SEO best practices, and leveraging end screens/CTAs. Also, address how to analyze [YOUTUBE ANALYTICS] to identify trends and improve performance. Tailor the advice for [CHANNEL SIZE] (small, medium, or large) and highlight common pitfalls to avoid. Be concise but thorough, using actionable examples.