I'm using this case, I love it

Samsung Galaxy S9 Plus Cases Covers with Full TPU Soft Edges & Art Cloth and Full-Edge Protection Shock- Absorbing & Great Grip Fully Compatibale for Samsung Galaxy S9 Plus(Black). https://www.amazon.com/dp/B07B459J3H/ref=cm_sw_r_cp_apa_wAd-Bb8C9ECRW

And this is my screen protector, extremely easy to apply and their warranty is great. It cracked once and they sent me a new one with a few days

Galaxy S9 Plus Screen Protector Glass, amFilm 3D Curved Dot Matrix Full Screen Samsung Galaxy S9 Plus Tempered Glass Screen Protector (6.2") 2018 with Easy Application Tray (NOT S9) (Case Friendly) https://www.amazon.com/dp/B079YC1TRH/ref=cm_sw_r_cp_apa_EBd-BbR2YAQZE