Looping video and music can't play automatically

I have a looping video and sound in main timeline. I has activate autoplay, inline, and loop option in menu. But When first load it on the browser, the looping video and sound are not play. They playing when I click botton or another interaction.

How to play it automatically whe we load browser on the first time?

most browsers have restrictions here where userinteraction is recommend ...

Video will play (when muted) at any point in time, for any reason -- but audio, whether it is part of the video or separate as an audio file, will only play in response to a user's tap or click. In the past few years browsers have made this requirement more strict.

so, what solution?

You can't play audio automatically (without a click or tap).
Browsers just don't let that happen.