Trainer Needed For 1 Dog In The Colony

1yr old 70lb Black Mouth Cur puppy who has behavioral issues like anxiety, OCD, and neuroses stemming from PTSD. Afraid of everything due to hyperarousal/hypervigilance and too afraid to eat, potty outside (we rent an apartment and he will go on the pee pad but is too overwhelmed to go outside and do his business as he is distracted and pulls/tries to run home on leash to go back in the apartment) and can be destructive to property/belongings. Self-mutilates when scared, growls at nothing even when calm and on Trazodone. Does not bite but seems to be fine with people but terrified of other dogs, cars, bicycles, the sound of a leaf rustling, you name it. Afraid of furniture, blinds, light peaking in through the blinds, and some toys even.