Door Lock Not Behaving Itself.. Help?

[IntegratedTJ]

Hey there guys. Haven't posted in a while. I've got a '72 c10 and was wondering if anyone knew how I could fix my driver side door lock? The passenger side works fine as it should, however the driver side never wants to lock for me. Never. When I push on the button, it feels like it has maybe bent? It won't go down and I don't want to REALLY force it (I've put a considerable amount of force on it.) for fear of it breaking further. I don't know where to start my troubleshooting for a bent part? Or something is rusted maybe? I know nothing about how door locks work and was hoping someone could enlighten me?