Feeling defeated

Nothing I do is soothing my little one. She cries for hours during the night. I feed her, change her, rock her, burp her, bounce her, shush her...and she just cries and cries. Then it's time to feed and change her again and we start all over again. Idk what else to do. I'm a single mom and I knew this would be hard but I didn't know it would be this hard. I feel like a failure that I cant console my own child.