No, I am not homeless, but I will give you advice as a resident of these woods:
You should learn these things before you go out in the woods, if you are really in the woods. Many parts way out, you will not get a cell signal to go online or communicate. Here is good info on foraging, really just berries, roots, and fungus.
https://feralforaging.com/foraging-alabama-and-southeast/You don't have to living on foraging like a wild hog, you can hunt, fish, and trap. Even using just a knife and/or the materials around you, you can build a shelter, catch meat, start a fire and cook it. A rifle makes hunting much easier, which you can use responsibly on public land if you are mindful and trained, let alone private lands. Cartridges also help you start friction fires in an emergency.
Those waters look pretty shallow, you won't get much in the way of big catfish in them. Deep running waters like rivers and lakes will have good fishing, you can fish with a pole, a net, just a line, a spear (DIY or otherwise), your hand, a trotline or trap, wooden trap, and in many ways. Passive ways allow you to do other work while the traps catch fish and game.
Otherwise you will want to prepare with equipment:
>A backpacking pack 50L or more>A bivy sack, bedroll, and sleeping bag for setting up camp>Dry clothes, food supplies, flint, knife, compass, canteen, water filter (iodine and/or filter) 
