Gyroscope sensor for character movement in web app

I'm trying to make a simple character controlled by the gyroscope.

Technically I know how to build it, but I've made a demo and I wasn't able get any angle out of the app. So there is no reaction on any movement.

I've tested on Chrome and Firefox on a Surface Go.

Here is my test Eventsheet:

One more thing:

The browser log says:

The orientation sensor should no longer be used.

What else should I use?