Hi Rabbit, I just want to point out a single issue. You said:
"I have tried to not grip as tight and relax my wrists more but I am not sure this is the correct way of doing it."
Whether you shoot single-handed or two-handed, your wrists must be very firmly
fixed. At the same time, your trigger finger should move independently of the
fixed wrist and hand hold. This may seem paradoxical but it is possible to learn
to move your trigger finger independently of your tensioned wrist. To illustrate
what I mean, grasp the pistol grip with the hand that you trigger with, tighten
your hold and stiffen your wrist. now move your trigger finger back and forth and
if you see a tendon move in your wrist, that needs to be corrected so that you
see little if any tendon movement.