Go to the autoplay policy via the Chrome address bar.
chrome://flags/#autoplay-policy in the address bar.
The Autoplay policy should be set to Default when you load the page. You’ll need to set the drop box option box to Document user activation is required so that you have to approve any video to play on a website.
Lastly, you’ll need to click on the blue Relaunch Now button found at the bottom of the page. This will restart the Chrome browser and activate the change.