Would anyone have any recommendations for a case for the S21 Ultra that offers good grip? I'm currently using the Spigen rugged armour but most of the back of the case is completely smooth making the large phone difficult to hold. Even in my large hands. I'm also finding Google Pay to be a lot more unreliable on the S21 Ultra compared to my previous handsets. P-30 Pro and various One Plus phones. Has anyone else had issues with G pay?