Uhhh, maybe I can help a bit? If you have family/friends who can help you, please contact them - ask them if they would be okay with having you for a while until things get calmer.* If you do, call 911. If you can’t call 911 when you’re home, maybe going shopping or such and calling 911 when not home would prevent your phone from getting smashed?

I hope you will get out of there as soon as possible. That is child abuse by your own unstable mother. Take care, hopefully things will get better.

Aah, also - just remembered, school psychologist! If your school has one, I’m pretty sure they work through Zoom nowadays too, contact them! They’re pretty much sworn to help you in these situations.