Compounds or peptides to help with hypermobile shoulder

[AleNNN]

So I have been dealing with a hypermobile left shoulder/clavicle for like 2 fucking years and this shit also causes the sternum to pop a bit. The symptoms are pretty much just that my left shoulder pops like a bitch and at the end of the day it hurts. Have confirmed through xrays and mris that there are no tears or damage, doc said it's baiscally a lax ligament and told me to go pt and build up the small muscles and sugery is out of the question, i gotta do the pt exercises, they help like a tiny bit but the small muscles are so fucking hard to get strong so what are the best steroids to run to strengten the joints and ligaments and what peptides are best to run to get inflammation down any people with joint issues that can share there knowledge are welcome