I can tell fro your post, you are exited and determined, and that's good, but there are no magic beans that will make deer show up when you want them. The best you can do is make it attractive and feel safe for them. like in a sanctuary,
I can also tell you need to relax some. Enjoy your time in the woods, drink in the out doors, watch nature as it unfolds before you,...then take the opportunities as they arise. You can't force it. being keyed up is going to work AGAINST you as you sit and wait, will make you fidget,(a dead give-a-way) and as you have seen, destroys your shot. Take the shot as you would at a target, ignore the rack, other than to make your selection, and calmly take the shot. And follow through with it, watch the hit, judge how it hit, the damage done. That shot is not finished until the deer is completely out of sight, and you have reviewed it in your mind. This includes all clues related to recovery of that deer. Keep your focus on how it acted, direction, gait, shot placement, land marks, and what is in that direction. You will find it helps a great deal on not having "buck fever" I seldom ever have a reaction before or during the shot, no matter how long I have to make the shot, It keeps you focused on what matters, and shaking is for after, when you realize what you have done.
The only real difference between a good tracker and a bad tracker is observation. All the same data is present for both. The rest is understanding what you are seeing.