Looking for recommendation on smartphone mount for taking videos

[jwrushman]

I will be taking a bike trip in about 5 weeks and I'm looking for recommendations for harnesses/devices that will allow me to take videos with my smartphone (Google pixel 6) while riding. A chest harness from ulanzi looks promising.  Any other devices or brands I should be considering?

[jwrushman]

I just tried the CM028 Adjustable Chest Mount Harness from Ulanzi.  It works fairly well. Two issues:

1) there are no instructions on how to use it. You have to figure it out with a few pictures on the box. And it's not entirely obvious how to switch between landscape and portrait.

2) you can adjust the tilt of the phone when in landscape mode but not in portrait.

I'll be playing with it more in the next few days on short rides to learn how best to photograph while cycling.