Hang in there! The site reactions do get better over time. I'm not sure if it's the bod getting used to the med, or the trial and error of finding the right things that work for ya. Could be a little of both.
Golden rule for auto inject:
Pinch an inch - 6-8 setting
More than an inch - 8-10
Less than an inch - 4-6
For me ~ arms are close to 4, legs are 6, everything else with more cushion is 8
And believe the injection sites they give. Took almost a year, but definitely learned they really mean 2 inches from the knee for the thigh.

Lucky I'm freckly, so I have markers on my leg that I know that I cannot go above that point.
Hope things get better soon.