The OP did what they could...which is a lot more than a lot of people do even for their own pets. For all we know, they may have continued to look for the owner. And again for all we know, the rescues in the area may have been full.
It is very easy to spend other peoples' money. Many people here have done it ( me included). Not everybody will do things the way YT likes to see them done. And not all rescues would have vetted this dog more than the OP did, And the ones that would have probably don't take in a ton of dogs because it costs $$$. They aren't all savable.
I see so many posts about turning dogs over to rescues here. That's all good except these places are already way too full and donors don't have an endless money supply usually. Of course the local shelters should be made aware of stray animals ( and usually take them in), but life isn't always that simpe though.
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