No one remembered my birthday

I (21F) have been on my own for a good 7-8 months now.. been trying to ignore the harsh reality that no one gives a damn about me, but it was almost impossible today, it was my birthday today and I worked until late evening, did everything to distract myself but as I came home I felt absolutely crushed cause not even my Mum called to congratulate my birthday, it may seem insignificant but it was just the cherry on top for me. I feel so terrible and I hate myself for being so isolated and forgettable. Life is alot harder when you’re on your own, this shit is not for the weak..