I recently upgraded my phone and didn't have a case and everytime I put my phone down it would slide and sometimes fall. Needing a case ASAP I picked this one up and it saved me from damaging my new phone. Easily slipped on to my iPhone, isn't too bulky and looks good too.
https://www.amazon.com/iPhone-Rubber-Ultra-Shockproof-Lightweight/dp/B07CQT5JQT