45 days ago I had an amazing 2 acre almost knee high plot. Just got to lease and I don't see any clover. Just dirt and a few weeds. Will it come back or did it die out? Don't remember this last summer

Maybe you will get lucky and it is a good re-seeder, but I think what you had, probably dried up and is a memory now.

most of the clover grown in Texas is a cool season annual plant. Meaning that it comes from the seed each year and produces most of the growth in late winter and early spring. There are some species that are perennial (grow from last years root stock) So what did you plant and where are you growing it?
If the animals ate it then it did it's job, If someone bailed it for hay you have a different problem.
The cool season annual plants are dependent on good moisture during the fall and winter.

I try to keep most of mine mowed at 4 to 6" high. Always goes dormant/dies in heat of summer. Mine also comes back somewhat in the fall after I mow and it rains. This is why I mix mine with Alfalfa, which is much more heat/drought tolerant (than the clover variety I have- Arrowleaf).

If you plant a tall cover crop like milo, it helps shade the clover and keep it going better.

Well I walked around today and looked more closely. There are still little spots of 1-2" tall. Mowed what few weeds were there. Let's pray rain and cool weather and it explodes back to its vigor. I also went ahead and tossed some rye around hoping that might nurse it. Plus if the clover doesn't come back I at least have something green to stare at.