National Forest/Preserves have areas that you can hunt with dogs on certain dates. Hunt clubs can also reserve dates for training, and events.
Texas is known a pay to play state, as most as land is privately owned.
You either own the property, or you pay to lease it for hunting/training.
I hunt my dogs a lot, and have lived in the this state my entire life.
For years we paid thousands of dollars on leases. The last 8 years, I've been given permission to run, and hunt my dogs on private property, without paying for it. Although we do help mow, build duck blinds, and whatever else is asked of us.