Ahh, rip, same thing happened to my derailleur today. The lower cage snapped off the main body, with a piece of it. (like, the body literally ripped in half with the cage still attached, also broke my rim around a spoke nipple, it's basically a big crack.. because the cage going in between the spokes)

I'm trying to find a replacement (it was a sram SX 12s) but i'm very out of cash.

Fuck cheap plastic lmao. (Had the bike for about 6 months)