iPhone XR phone case: Just $2 buys you see-through protection
https://www.cnet.com/news/iphone-xr-phone-case-just-2-buys-you-see-through-protection/
This is a soft-sided, flexible case made of TPU, so it's more likely to protect you against scrapes and scruffs than it is hard knocks against the pavement. (For the latter, you'd want to look at a hard-plastic case.) Still, some protection is better than no protection.
Beyond that, the case has slightly raised camera and screen bevels to help protect against scratches. And that's about it! Protection for your iPhone XR that still lets the color shine through.