Welcome Joe. I too would suggest a shop check out your new bow, mostly because it is used. Keep in mind, there is nothing wrong with used. My bow may be older than you are.
A bent stick with a bootlace will kill a deer if you must. And any bow can do that, but one tuned to your size and draw length will do the job better.that much is very true,
but being used, it might have fatigue problems in limbs, cams, or cables, that could cause Injuries to you if they were not caught. Loose or misaligned arrow rest, or a worn out bow string. These things do need to be addressed before you you start shooting with it. A bow shop is the place for that.
They may also advise you on better sights, razor head tips, and the correct arrow length and type for your type of shooting.
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.