Brands do not ask what gear you own. They ask to see examples. So the first thing to make is an example, for a product you already have, before anyone hires you.
One product, one angle, one afternoon
Pick a single product from your own cupboard and a single thing to say about it. One problem it solves, one detail that surprised you, one moment it fits into your day. Trying to cover three selling points is what makes a video look like a commercial.
Then pick a shape. Talk to the camera like you are telling a friend. Or show the problem first and the product as the fix. Or just demonstrate it working in your hands.
Write five to eight spoken lines for a thirty-second video, in the way you actually talk. Read it out loud. If it sounds like ad copy, loosen it.
Shoot it on your phone
Face a window — never have the light behind you. Shoot vertical, leave a little headroom, and prop the phone on something so it does not drift. Record somewhere quiet, because clean audio matters more than resolution. Grab a few cutaways too: the product close up, your hands opening it, it sitting on your counter.
Film three or four different opening lines over the same body footage. Hook options are the most useful thing you can hand a brand.
Then cut it tight. Every pause, every "um", every dead half second. Burn in captions, because most people watch muted. Export 9:16 MP4 and stop there — do not polish it until it looks like an ad.
Do not buy gear first. A paid deal pays for the gear.
Film it tonight, then add your first sample.