What makes a video ad sell?
The first seconds decide everything. If the customer doesn't stop scrolling, nothing after matters. So we write more than one hook for every idea: a question, a before-and-after result, or a problem the customer knows well.
After the hook the ad needs a reason to buy: what the product solves, why it beats the alternative, and what removes the customer's doubt. Then a clear call at the end: order now, find your size, or claim the offer.