I would be content if they'd stop making phones slippier than a wet bar of soap. My Pixel 8a is ridiculous, I don't know how they do it. If you have dry hands, it's nearly impossible to hold on to.
Found one on Amazon so I dodge Google's exorbitant plastic markup, and it is a relatively minimalist wrap that smooths out the camera bump and makes it more grippy in hand, in pockets, and on flat surfaces.
The behavior of those slippery phones in pockets is almost the bigger gripe to me. Like they are a new class of motion amplifier, trying to rotate and squirt their way out at the slightest twitch.
I would never use a case with a phone of any sort. I don't like the extra bulk, and the friction they add is annoying.
Meanwhile I never use a tablet or kindle device without a cover.