If you are carrying extra weight, get lighter.
For me deadlift, stiff leg deadlift, good mornings, hip thrusters, exercises on the Donkey (glute-ham, reverse sit ups, etc.) and bandwork seem to help with the back.
I also need to get back in for ART/deep tissue massage to deal with elbow pain (golf and tennis elbow). That's about the only thing that helps my elbows.
But, ya, get lighter.