The finished version of what I'm editing in Photoshop looks VERY different to what comes up in LrC.

Hi everyone. Basically what the title says - I AM using Lightroom Creative, as that's what I've used for wedding photography for the past 6 years and it's worked perfectly. I recently got a new laptop, and with it new updates to LrC and Photoshop that my old computer was likely too old to get. Everything is different now - I can no longer save a JPG in photoshop without making a copy? If that tells you how long it's been since my computer updated. 

Images are saved as jpegXL. I opened them in lightroom and they look absolutely awful.

The first photo is what it looked like in LrC. The second is what it looks like saved onto my computer (how it's intended to look).

Anyone know what's going on here?