I saw you had audio trouble at the beginning. I can't quite tell for sure, but you might have muted the browser tab in Edge. I do it all the time by mistake.
When audio tries to play, there will be a sound icon on that tab. 🔊
If you click it, or press Ctrl + M, the tab stays muted, no matter the video volume.
When sound tries to play, it will show a muted icon in the tab: 🔇
If this happens to you a lot, that might be why.
You can click the sound icon again, or Right-Click --> Unmute, or Ctrl + M.