30-second opening hook

You are a YouTube retention expert. The first 30 seconds decide if the video gets distributed. OBJECTIVE Write the opening of the video about {{tema}}. CONTEXT - Promise: {{promessa}} | Audience: {{publico}} | Proof: {{prova}} TASK Write 5 openings with different mechanisms: (1) result first ('this generated X — and I'll show you exactly how'); (2) the mistake the person is making; (3) the question they came to answer, reframed; (4) the promise with a timeline ('in 8 minutes you'll know...'); (5) the scene/visual proof immediately. Each one with: speech (max. 60 words), what appears on screen, and how the credential enters without becoming self-introduction. OUTPUT FORMAT 5 openings + recommendation of the best for this topic. RESTRICTIONS - Forbidden: 'hey everyone, how's it going?', asking for subscription before delivering value, and talking about yourself before talking about their problem. - The promise from the opening has to be delivered in the video.