I don't use a case. But if I do the most i use is an ESR Metal Bumper or a skin just on the back.
This is what I ordered.
ESR Crown Metal Bumper Case for iPhone Xs Max, Metal Frame Armor with Soft Inner Bumper[No Signal Blocking][Raised Edge Protection] for iPhone 6.5 inch(2018)(Gray)
https://www.amazon.com/dp/B07FVM8SPX...mUvbUpU3087845
I'm going to see how this case is but I doubt it will be used a whole lot.
ESR Bumper Hoop Case for iPhone Xs Max, Heavy Duty Armor with Flexible Cushion [Reinforced Camera Protection] [Glass-Back Safe] for 6.5 inch(2018)(Black)
https://www.amazon.com/dp/B07GJM8RXG...mUvbUpU3087845