Product reviews

If it were me, I'd look for people who reviewed similar products. Watch their reviews, and if they measure up, contact them to start a conversation.

You're looking for the influencers in the whatever niche or industry you're operating in. You're not necessarily looking specifically for "YouTube product reviewers". You might find the slickest YouTube channel on the planet willing to review your product, but if they have no cachet with the people you're trying to sell to, what's the point?

If it was me, I'd make a list of all the people I could think of that carry real weight in whatever industry it is I'm trying to make headway into. Then I'd rank them from one to as many as I've got. Then I'd go down the list, one by one, finding a way to get in contact and asking them if they'd be willing to do a review of my product if I sent them one.

Whether or not that person had ever reviewed anything on YouTube would be far less important to me than the weight their opinion would carry with my target audience. Everyone has a cell phone these days. Anyone can video themselves giving a product review, even if they never have before.

You can get review made on fiver they are many people who do this there