If I was "rebuilding" a person's shot, we'd start with a rubber band (like I show in one video) and teach the person the correct movements and position with LIGHT resistance (draw weight). Once the movement and body position was understood, then we progress to a LIGHT bow (I carry 16# bows for just this reason) and start shooting at the blank bale to reinforce the movement and position while releasing an arrow. Again, bale up CLOSE (5-6 feet) to catch arrows. The goal is to learn to make the shot while maintaining focus on MOVEMENT to full draw, setting the bones into alignment and FEELING the shot. You measure yourself by how you feel you executed the shot, NOT by where the arrow lands!!!
As you progress, you can move that bale back a little at a time. And, as you progress, you will find that your arrows are grouping. BUT!!! That grouping is NOT a result of aiming, it IS a result of executing the shot with your movement of execution. IF you can learn to execute the shot the same way each time, the arrows will go to the same place (group). All the while, focusing on the archer's "T", bone on bone and a solid facial reference for the string hand.
You should build this up a step at a time. Don't bounce around from one item to the next. Don't try to gauge your progress by trying to hit a bull's eye, that comes MUCH later.
Build a shot sequence, what do you do first, second, third, etc. Make that sequence your path for every shot, never deviate or shortcut it. Adjust it, improve it, of course, but stick to YOUR sequence as you build it.
This can sound complicated but is really just the first one hour lesson with a coach. I'd BET that in Florida, you can find one relatively nearby.
https://www.teamusa.org/usa-archery/judges-and-coaches/coaches/usa-archery-coach-locatorArne