Vimeo videos plays without sound on my website

Hello, I’ve embedded a few videos on my website (made through Vimeo, downloaded as .mp4) on product pages (the links are inputed on the Botidy Custom Fields app).
The thing is the videos are autoplaying but they are muted (see attached HTML code from the live website). Is there a way for me to change this? I’ve read other requests on the community but all they mention is editing the data.json file but mine doesn’t refer anything regarding videos.

Any suggestions?

this might be a feature: Many browsers (e.g. Chrome) do not allow videos to autoplay when they have sound. I have no clue about your setup, but often you have the choice between:

  1. autoplay of video, but on mute

  2. no autoplay, user can start video by clicking. Sound is enabled.