Probably an easy answer to this one, but I’m not really up on these American style things.
There is a large build up of ice in the bottom of the freezer part, which results in puddles of water on the kitchen floor. There seems to be a frozen trail coming from the back wall of the freezer. I presume it is doing it’s defrost thing and the water is trickling into the bottom where it freezes. Is there a drain that gets blocked? Or something more serious?