Is my dog going to die soon :'(?

I'm no vet but your dog is really old in dog years If I were you though I would pit your dog to sleep, a few years ago I would agree with not pitting your dog to sleep buy my mom told me it's better to put them to sleep because the longer they live the more pain they go through. Also if you let your dog keep living when he foes die he might run away to die alone because dogs like to be alone when they die so then I you might not know where his body is and I think it more sad when you don't know where your dog is and also you can't give the proper funeral he deserves...