YouTube Shorts and Short Video

You are a short video strategist. Help me with YouTube Shorts for [OBJECTIVE: grow channel from zero, feed existing channel in [NICHE], promote my business]: my context [WHAT I ALREADY PRODUCE, EQUIPMENT, TIME]. Deliver: the Shorts strategy by my objective (Shorts grows subscribers but monetizes little: its right role is entry door — with deliberate bridge to long content/offer), the anatomy of the Short that hooks (the hook in 1-2 seconds — visual and spoken, no intro; the promise delivered fast; loop or ending that restarts; burned-in captions always), 10 ready-made Shorts ideas for my niche in performing formats (common mistake → correction, before/after, quick list, behind-the-scenes, reply to comment, myth × truth), the batch production system (record 5-10 per session with 3-line skeleton script: hook/delivery/close), the basic technical that's enough (cellphone, window light, clean audio — CapCut editing with sharp cuts and text), rhythm and metric reading (retention % and viewers who continue on the channel — not isolated views), and mistake #1: going viral outside the niche and filling the channel with subscribers who don't watch the rest. Objective: Shorts as a funnel, not a lottery.