If you are missing that many deer, I don't care what time of day it is, you have a problem. It is either your equipment or you can't shoot. To me it is obvious that the first step is to go to the range and make dang certain the scope is dead on and not moving between shots. If all the equipment checks out, you have a far bigger problem.
If you are not willing to go shoot three or four at 50-yards, then no advice youget on here is going to help and you are going to continue to miss deer. It is your call. All I can say is, you have missed more times in one year than I have missed in a decade and i can't shoot very well.