Most (all?) modern phones use OLED/AMOLED screens which aren't subject to the polarization problems of LCD screens - at least they aren't supposed to be. I get a little polarization "fog" at certain angles, looking at any screen, but not enough to really bother me.
I have the same phone as Rich and find it plenty bright. But, to be fair, I have to take my sunglasses off and put reading glasses on to see my screen anyway. So, I don't do a lot of looking at it with sunglasses. It has a peak brightness of 1750 nits which is pretty respectable. But, in the past couple of years some screens have been getting a lot brighter. The Google Pixel 10 Pro XL, for example, is something like 3300 nits, and there are a few other phones in that range.
But ... manufacturers like to publish "peak brightness" which doesn't really tell you what you want to know. This just tells you the maximum brightness that can be momentarily achieved in a small area on the screen. It doesn't tell you the actual brightness of the screen in a way that tells you how readable it will be. For this, you want to know the "full-screen" brightness, which is rarely published without doing some digging.
Fortunately, a screen with a higher peak brightness will also tend to have a higher full-screen brightness. They are more or less colinear. Just make sure you don't compare the "peak" brightness of one phone with the "full-screen" or "typical" brightness of another.