How to get the glare effect to turn off?

On the facer app on my phone when I am looking at a watch face you can hit a sun looking thing and it makes the watch face usually change colour or look more black and removes the glare effect on the watch, how do I do this on my watch itself? I’m not a big fan on the glare effect and prefer just a jet black look, thanks

That “sun looking thing” is the toggle to switch between normal and Always On Display mode. What you are seeing is the watch face as it would look with AOD active and the watch face not active. Your best bet would be to search for OLED friendly or dark watch faces that are made to look the way you want all the time.