>>1302790>I know you all aren't necessarily a "tech support" boardwrong
That's a derailleur hanger. It's not a shimano part. It's designed to break instead of your derailleur breaking. They're very cheap and common and you can absolutely replace it. You just need to find the right one.
https://derailleurhanger.com/if you have a somewhat common bike you may find it on that. Otherwise it's a matter of eyeballing a replacement or maybe try find one in a shop. There are lots of different universal ones.
