There's actually quite a lot you can do with your arm kept fairly low.
A waist level wind up with sidearm release just using wrist and elbow works well.
Likewise pure underhand is good for distance.
Shanie you're not nearer it I could sort you out with a few different styles to try.
You can also use your legs and waist to put back some of the power you lose from the shoulder.
I suspect I've probably got this coming at some point as both parents and my sister have a had similar shoulder issues.
My mum and sister had tendon tears repaired and both had bony deposits chiselled off somewhere.
Somewhat disconcerting as they only use local anesthetics.
I take similar joint supplements to the ones we give the dogs.
Just started one with turmeric and green mussle extract (chrondrotin ?) as well as glucosamine.
I think my knees have improved, but only been on it a few weeks.
Touch wood, never had any right arm issues.
Left arm has dodgy shoulder from when I popped the joint some years bach, and I detached the left bicep a while back as well.
Rehabilated myself without surgery, got it back to full strength in about 4 months.
Both currently work fine, but definitely going to have issues at some future point in time.
Good luck and keep taking the tablets