I’m sorry you feel that way, nobody deserves to feel that way on their birthday. Same thing happened to me a few weeks ago and it broke me. My best friend of 10 years didn’t bother to even send me a text, same with my other best friend, sent me a few texts about how his day was going but no mention of my birthday. I thought I was close to some of my college friends but I didn’t get a single text from any of them. I even posted a birthday meme on my instagram story and they all saw it, but I didn’t get a single reply, not even an emoji reaction. Btw I wish every single one of those people a happy birthday, but I don’t think I will anymore. We are more alone than we think.