Driveshaft broke while driving?

My drive shaft broke.

Thanks for the image, yep you have a broken driveline, but I would raise the rear of the truck to see if the rear wheels will turn. It could be the driveshaft broke due to the rear differential issue, here is a guide that can help:

https://www.2carpros.com/articles/jack-up-and-lift-your-car-safely

Here is a guide to help with the U joint replacement:

https://www.2carpros.com/articles/how-to-replace-a-universal-u-joint

If the rear wheels turn, I would service, the differential. This video will show you how, and you can look for metal in the gear oil:

https://youtu.be/6F26Kir0OCg?si=hpH62tS8CnpEAffs

Check out the images (below). Please upload pictures or videos in your response of any problems so we can see what to help you with.