Agree with all above and would like to add what works for me:
is your peep sized correctly? I have a 28” ATA bow and a 29.5” DL and have the largest peep I could find. The circle of the peep fits perfectly for the circle of the sight. If yours doesn’t, maybe try a larger (or smaller) peep.
Also, when aiming, try to focus your eyes on the bulls eye and your brain will naturally draw the pin to it. A lot of people focus their eyes on the pin and try to line it up with the bullseye.
Lastly, i don't shoot groups. I only shoot one arrow at a time. This lets my muscles relax and achieve stasis before taking another shot so that my muscles have a chance torelax and my. muscle memory is not conditioned in a fatigued state.