I've been there. Last year I shot a big doe at 15 yards. Hit the scapula. It sounded like hitting a board. She took off with my arrow sticking out of her shoulder. Never found blood, arrow or deer despite a five hour search. It happens. The shot was not far from where I was aiming, but it was enough. I was shooting my Mahaska longbow. I don't have a chrono, but it is very fast. I was using a 500 grain arrow with a sharp snuffer on the front. A week later I sent the same type of arrow through the vitals of a doe and into the ground behind her.
Bad hits happen. It is part of archery. It sucks, but you can't call the arrow back, so you have to live with it. I still replay that shot in my mind a lot, but I'm not about to let it keep me from hunting.