I'm 50 & everyone I had in my life just left me behind

So I'm 50 years old and find myself alone in every single way. I lost my parents 3 years ago. I'm single. I have no girlfriend or even any friends anymore. I am however at least employed which most can't say these days. <br><br>I feel like just giving up. I'm tired of feeling so alone because it just feels like no one cares whatsoever.