Why the video tag is not working sound? And how to enable it via js?

Video works, but sound is not.

My code
<video class="move" preload="auto" autoplay="true" loop="true" muted="muted">
 <source src="/files/move/move.mp4" type="video/mp4">
April 3rd 20 at 18:49
1 answer
April 3rd 20 at 18:51
muted="muted" - muted.
The problem is, with sound enabled, you will not have to work avtopley.

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