Help coping with surrendering a dog 😢

I recently had to surrender my 10 year old husky, my father kept him for the last few years as I had moved to Germany with my husband. We purchased a house back home but my husband does not want the husky. My father asked to keep him so I let him, but I did not like the way he was living as he was chained up outside and Kansas summers get extremely hot. He never kept up with his vaccinations and never renewed his microchip. Last week my parents announced they are getting divorced and they have nowhere to go, which means neither do the animals. I begged so much for that dog but my husband didn’t budge and my father went to Texas to help my aunt move and asked me to feed and water the dog. The moment I saw him I could not take the sight, his ears were chewed and nose was scratched from flies. I immediately loaded him up and took him to the shelter. I had no other choice, I wanted to take him so bad but I knew that I couldn’t. The thought of him being on that cable not getting any attention has always haunted me, so I made the heart wrenching decision. Luckily he was there for no more than 24 hours, he was already adopted, I was so grateful but I am also so sad because I no longer know where he is. I feel like a failure and I cry a lot, I loved him so much and not knowing where he is kills me even more, but the lady at the shelter said the people who took him really loved him, this I am happy for. I just want to know what you guys do to cope with this grief, I never imagined I would surrender an animal, one that I loved so much, but his well being was not good.