Posting a video with an option to unmute??

I'm trying to add a video to my product page, and I need the video to have an unmute capability. I'm using the Horizon theme.

Tried adding the video directly to Shopify, it's muted and can't unmute.

Uploadad a link from Vimeo (paste link, video and video embed are both set to Public) and still no sound and no unmute button.

I can't be the only user who needs to have sound able to be turned on by my possible buyers.

What's my fix here, please?

Thanks, folks