I need help finding some deer.
Take out your GPS. Then walk around for awhile. You'll soon get a 'blip' on your GPS telling you there has been a sighting near by. Go toward the area, approach with caution. Increase your tracking gauge shown by the 3 circles in the GPS top bar by picking up data like foot prints and deer dung.
The more tracking you have on a target. The easier they are to find.
After you've shot it. If the deer runs away, don't think you've missed. Follow the deer's path. Sure enough, it will collapse and you'll either have to finish it off, or confirm it's death.