Never been able to be happy on my bday

23M ,Ever since high school I have always hated my bday coz of deep rooted parental and childhood issues, I got a dog when i completed my 10th std we shared same bday so that's the only way I used to feel happy on my bday, he gave me a reason to be happy. Now i don't feel that happiness at all it's just pathetic and i feel lonely Last year I lost him 15 days after celebrating his bday now all that trauma is coming back to me on my bday which is today ,and i brokeup with my girl 2 weeks back on top of that im having exams it just sucks and I'm not liking any of it

Is it common for guys to not be happy on their bday and hating it ? I just feel like nothing improved compared to my last bday I'm still alone it still feels lonely despite having freinds who wish me and wanna celebrate it I feel like I'm not worthy of that celebration so I don't celebrate it .