lord plz send help

hey guys so i have a dog and he’s around like 7/8 months. see now i wasnt thinking about my work schedule and all the shit like that when i got him. so like anyways he’s so bad. he chews everything he shits and pisses wherever he wants and i’m over it. i’ll give him consequences when he does it and he doesn’t learn from the little hits on the bum at all. and when i cage him he still goes to the bathroom in there as well. i’m on the verge on like idek i just need help before i go insane.