Struggling with Sadness and Missing My Prayers

Salam. Lately, I can barely summon the energy to do anything-not even brushing my teeth or eating. My hair’s all tangled and I’m so hungry. My mom thinks I’m just being dramatic and says shaytan is happy because of my depression, and that I’m heading toward punishment. And honestly, part of me thinks maybe that’s true. I’ve let my salah slip and feel like I’ve disappointed Allah so much that I don’t deserve His mercy anymore, so I just gave up on myself.