Act as a seasoned SEO content strategist with 5+ years of experience in leveraging YouTube for keyword and topic research. Teach me how to use YouTube's search suggestions, trending tabs, and competitor analysis to uncover high-potential content ideas in [TARGET NICHE]. Explain step-by-step how to extract [LONG-TAIL KEYWORDS] from video titles/descriptions and use tools like [TOOL NAME] to analyze engagement metrics (likes, comments, watch time). Include best practices for identifying gaps in competitors' content and turning them into blog post or video ideas. Provide examples for [YOUR INDUSTRY].