My freezer door became unhooked on he bottom I don't know if it is broken or i just don't know how to put it back on

Jimmy the door back and forth, up and down until you get it out. Carefully. Two people helps. There are two metal hooks at the bottom left and corners. The upper one hangs up on a "catch" inside the slot, and you just need to navigate that. Carefully. We had one side come unlatched so needed to be careful not to pull that side out too far to cause too much torque. You'll get it.
Once the door is out, grab a phillips screwdriver. Look for a thin rectangular white piece of plastic (one in each corner, about 4" x 5") that covers the hinges on each side. Unscrew the upper and lower outside screws on that. Take it off. May need to pour warm water on it if it is iced on. It may be taped on but it comes off.
Now you can access the "hooks" better. Have someone hold the door steady (in upright position). Pull the upper hook down (takes a little strength) and then pivot the weird little piece of metal on the lower hook until it fits into the upper hook (temporarily latching them together). Repeat for other side.
Then carefully lift the door into place and slide both "latched" hooks into the interior slots. Helps to have two here. The drawer needs to be out so you can access the hooks and slots. Once the hooks are in the slots, grab that phillips again. Have someone hold a little pressure on the door to keep it in place, and gently pry the weird little pivoting metal piece away from the upper hook with the phillips. Repeat for the other side.
Now push the door into place carefully. Hopefully it will latch up the way it is supposed to on both sides and you will have your freezer (and happy wife) back. Happy wife, happy life! Good luck!