I think everybody has or is going to make a bad shot sooner or later, for whatever reason.

Learn from your mistakes, do better next time.

IMO you have an ethical responsibility to make every effort to find that Deer. And if it hasn't expired, finish what you started.

Blundering around in the brush in the middle of the night for hours is a challenge, but it is not a lot of fun. It kind of inspires you to do better next time.

Tomorrow watch for Vultures, Ravens and Crows, they will show you where it is.